| Guarantor and Non-Guarantor Financial Statements - Balance Sheet (Details) - USD ($)
 | Sep. 30, 2016 | Mar. 31, 2016 | Sep. 30, 2015 | Mar. 31, 2015 | 
| Current assets |  |  |  |  | 
| Cash and cash equivalents | $ 9,416,000 | $ 11,231,000 | $ 4,582,000 | $ 7,069,000 | 
| Restricted cash | 321,000 | 0 |  |  | 
| Accounts receivable, net of allowances of $471 and $464, respectively | 17,477,000 | 17,519,000 |  |  | 
| Deposits | 152,000 | 213,000 |  |  | 
| Prepaid expenses and other current assets | 515,000 | 583,000 |  |  | 
| Total current assets | 27,881,000 | 29,546,000 |  |  | 
| Property and equipment, net | 2,462,000 | 1,784,000 |  |  | 
| Cost method investment | 999,000 | 999,000 |  |  | 
| Deferred tax assets | 401,000 | 500,000 |  |  | 
| Intangible assets, net | 8,729,000 | 12,490,000 |  |  | 
| Goodwill | 76,621,000 | 76,621,000 |  |  | 
| TOTAL ASSETS | 117,093,000 | 121,940,000 |  |  | 
| Current liabilities |  |  |  |  | 
| Accounts payable | 20,071,000 | 15,300,000 |  |  | 
| Accrued license fees and revenue share | 8,613,000 | 9,622,000 |  |  | 
| Accrued compensation | 1,073,000 | 1,353,000 |  |  | 
| Short-term debt, net of debt issuance costs and discounts of $0 and $568, respectively | 0 | 10,432,000 |  |  | 
| Deferred tax liabilities |  | 0 |  |  | 
| Other current liabilities | 1,660,000 | 2,147,000 |  |  | 
| Total current liabilities | 31,417,000 | 38,854,000 |  |  | 
| Long-term debt | 9,384,000 | 0 |  |  | 
| Other non-current liabilities | 835,000 | 815,000 |  |  | 
| Total liabilities | 47,122,000 | 39,669,000 |  |  | 
| Preferred stock | 100,000 | 100,000 |  |  | 
| Common stock | 8,000 | 8,000 |  |  | 
| Additional paid-in capital | 297,929,000 | 295,423,000 |  |  | 
| Treasury stock (754,599 shares at September 30, 2016 and March 31, 2016) | (71,000) | (71,000) |  |  | 
| Accumulated other comprehensive loss | (255,000) | (202,000) |  |  | 
| Accumulated deficit | (227,740,000) | (212,987,000) |  |  | 
| Total stockholders' equity | 69,971,000 | 82,271,000 |  |  | 
| TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY | 117,093,000 | 121,940,000 |  |  | 
| Accounts receivable, allowances | 471,000 | 464,000 |  |  | 
| Debt discount | 0 | 568,000 |  |  | 
| Debt discount, long-term | $ 6,616,000 | $ 0 |  |  | 
| Series A Convertible Preferred Stock, par value (in usd per share) | $ 0.0001 | $ 0.0001 |  |  | 
| Series A convertible preferred stock, shares authorized | 2,000,000 | 2,000,000 |  |  | 
| Series A convertible preferred stock, shares issued | 100,000 | 100,000 |  |  | 
| Series A convertible preferred stock, shares outstanding | 100,000 | 100,000 |  |  | 
| Series A convertible preferred stock, liquidation preference | $ 1,000,000 | $ 1,000,000 |  |  | 
| Common stock, par value (in usd per share) | $ 0.0001 | $ 0.0001 |  |  | 
| Common stock, shares authorized | 200,000,000 | 200,000,000 |  |  | 
| Common stock, shares issued | 67,368,462 | 67,019,703 |  |  | 
| Common stock, shares outstanding | 66,634,006 | 66,284,606 |  |  | 
| Treasury Stock, shares | 754,599 | 754,599 |  |  | 
| Eliminations |  |  |  |  | 
| Current assets |  |  |  |  | 
| Cash and cash equivalents | $ 0 | $ 0 | 0 | 0 | 
| Restricted cash | 0 | 0 |  |  | 
| Accounts receivable, net of allowances of $471 and $464, respectively | 0 | 0 |  |  | 
| Deposits | 0 | 0 |  |  | 
| Prepaid expenses and other current assets | 0 | 0 |  |  | 
| Total current assets | 0 |  |  |  | 
| Property and equipment, net | 0 | 0 |  |  | 
| Cost method investment | 0 | 0 |  |  | 
| Deferred tax assets | 0 | 0 |  |  | 
| Intangible assets, net | 0 | 0 |  |  | 
| Goodwill | 0 | 0 |  |  | 
| TOTAL ASSETS | 0 | 0 |  |  | 
| Current liabilities |  |  |  |  | 
| Accounts payable | 0 | 0 |  |  | 
| Accrued license fees and revenue share | 0 | 0 |  |  | 
| Accrued compensation | 0 | 0 |  |  | 
| Short-term debt, net of debt issuance costs and discounts of $0 and $568, respectively |  | 0 |  |  | 
| Deferred tax liabilities |  | 0 |  |  | 
| Other current liabilities | 0 | 0 |  |  | 
| Total current liabilities | 0 | 0 |  |  | 
| Long-term debt | 0 |  |  |  | 
| Other non-current liabilities | 0 | 0 |  |  | 
| Total liabilities | 0 | 0 |  |  | 
| Preferred stock | 0 | 0 |  |  | 
| Common stock | 0 | 0 |  |  | 
| Additional paid-in capital | 0 | 0 |  |  | 
| Treasury stock (754,599 shares at September 30, 2016 and March 31, 2016) | 0 | 0 |  |  | 
| Accumulated other comprehensive loss | 0 | 0 |  |  | 
| Accumulated deficit | 0 | 0 |  |  | 
| Total stockholders' equity | 0 | 0 |  |  | 
| TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY | 0 | 0 |  |  | 
| Parent | Reportable Legal Entities |  |  |  |  | 
| Current assets |  |  |  |  | 
| Cash and cash equivalents | 3,546,000 | 6,712,000 | 3,446,000 | 4,156,000 | 
| Restricted cash | 0 | 0 |  |  | 
| Accounts receivable, net of allowances of $471 and $464, respectively | 7,000 | 24,000 |  |  | 
| Deposits | 0 | 0 |  |  | 
| Prepaid expenses and other current assets | 380,000 | 331,000 |  |  | 
| Total current assets | 3,933,000 | 7,067,000 |  |  | 
| Property and equipment, net | 69,000 | 53,000 |  |  | 
| Cost method investment | 0 | 0 |  |  | 
| Deferred tax assets | 401,000 | 500,000 |  |  | 
| Intangible assets, net | 1,000 | 0 |  |  | 
| Goodwill | 0 | 0 |  |  | 
| TOTAL ASSETS | 4,404,000 | 7,620,000 |  |  | 
| Current liabilities |  |  |  |  | 
| Accounts payable | 1,488,000 | 1,255,000 |  |  | 
| Accrued license fees and revenue share | 0 | 0 |  |  | 
| Accrued compensation | 38,000 | (544,000) |  |  | 
| Short-term debt, net of debt issuance costs and discounts of $0 and $568, respectively |  | 7,432,000 |  |  | 
| Deferred tax liabilities |  | 0 |  |  | 
| Other current liabilities | 1,606,000 | 152,000 |  |  | 
| Total current liabilities | 3,132,000 | 8,295,000 |  |  | 
| Long-term debt | 9,384,000 |  |  |  | 
| Other non-current liabilities | 835,000 | 815,000 |  |  | 
| Total liabilities | 18,837,000 | 9,110,000 |  |  | 
| Preferred stock | 100,000 | 100,000 |  |  | 
| Common stock | 8,000 | 8,000 |  |  | 
| Additional paid-in capital | 297,929,000 | 295,423,000 |  |  | 
| Treasury stock (754,599 shares at September 30, 2016 and March 31, 2016) | (71,000) | (71,000) |  |  | 
| Accumulated other comprehensive loss | 16,000 | 26,000 |  |  | 
| Accumulated deficit | (186,766,000) | (179,131,000) |  |  | 
| Total stockholders' equity | 111,216,000 | 116,355,000 |  |  | 
| TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY | 130,053,000 | 125,465,000 |  |  | 
| Guarantor Subsidiaries | Reportable Legal Entities |  |  |  |  | 
| Current assets |  |  |  |  | 
| Cash and cash equivalents | 5,815,000 | 4,466,000 | 1,072,000 | 2,827,000 | 
| Restricted cash | 321,000 |  |  |  | 
| Accounts receivable, net of allowances of $471 and $464, respectively | 17,035,000 | 17,369,000 |  |  | 
| Deposits | 116,000 | 133,000 |  |  | 
| Prepaid expenses and other current assets | 130,000 | 239,000 |  |  | 
| Total current assets | 23,417,000 | 22,207,000 |  |  | 
| Property and equipment, net | 2,333,000 | 1,690,000 |  |  | 
| Cost method investment | 999,000 | 999,000 |  |  | 
| Deferred tax assets | 0 | 0 |  |  | 
| Intangible assets, net | 5,475,000 | 8,660,000 |  |  | 
| Goodwill | 75,621,000 | 70,377,000 |  |  | 
| TOTAL ASSETS | 107,845,000 | 103,933,000 |  |  | 
| Current liabilities |  |  |  |  | 
| Accounts payable | 18,559,000 | 14,002,000 |  |  | 
| Accrued license fees and revenue share | 8,330,000 | 9,549,000 |  |  | 
| Accrued compensation | 1,035,000 | 1,800,000 |  |  | 
| Short-term debt, net of debt issuance costs and discounts of $0 and $568, respectively |  | 3,000,000 |  |  | 
| Deferred tax liabilities |  |  |  |  | 
| Other current liabilities | 789,000 | 737,000 |  |  | 
| Total current liabilities | 28,713,000 | 29,088,000 |  |  | 
| Long-term debt | 0 |  |  |  | 
| Other non-current liabilities | 0 | 0 |  |  | 
| Total liabilities | 28,713,000 | 29,088,000 |  |  | 
| Preferred stock | 0 | 0 |  |  | 
| Common stock | 0 | 0 |  |  | 
| Additional paid-in capital | 0 | 0 |  |  | 
| Treasury stock (754,599 shares at September 30, 2016 and March 31, 2016) | 0 |  |  |  | 
| Accumulated other comprehensive loss | (583,000) | (440,000) |  |  | 
| Accumulated deficit | (38,742,000) | (31,231,000) |  |  | 
| Total stockholders' equity | (39,325,000) | (31,671,000) |  |  | 
| TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY | (10,612,000) | (2,583,000) |  |  | 
| Non-Guarantor Subsidiaries | Reportable Legal Entities |  |  |  |  | 
| Current assets |  |  |  |  | 
| Cash and cash equivalents | 55,000 | 53,000 | $ 64,000 | $ 86,000 | 
| Restricted cash | 0 | 0 |  |  | 
| Accounts receivable, net of allowances of $471 and $464, respectively | 435,000 | 126,000 |  |  | 
| Deposits | 36,000 | 80,000 |  |  | 
| Prepaid expenses and other current assets | 5,000 | 13,000 |  |  | 
| Total current assets | 531,000 | 272,000 |  |  | 
| Property and equipment, net | 60,000 | 41,000 |  |  | 
| Cost method investment | 0 | 0 |  |  | 
| Deferred tax assets | 0 | 0 |  |  | 
| Intangible assets, net | 3,253,000 | 3,830,000 |  |  | 
| Goodwill | 1,000,000 | 6,244,000 |  |  | 
| TOTAL ASSETS | 4,844,000 | 10,387,000 |  |  | 
| Current liabilities |  |  |  |  | 
| Accounts payable | 24,000 | 43,000 |  |  | 
| Accrued license fees and revenue share | 283,000 | 73,000 |  |  | 
| Accrued compensation | 0 | 97,000 |  |  | 
| Short-term debt, net of debt issuance costs and discounts of $0 and $568, respectively |  | 0 |  |  | 
| Deferred tax liabilities |  | 0 |  |  | 
| Other current liabilities | (735,000) | 1,258,000 |  |  | 
| Total current liabilities | (428,000) | 1,471,000 |  |  | 
| Long-term debt | 0 |  |  |  | 
| Other non-current liabilities | 0 | 0 |  |  | 
| Total liabilities | (428,000) | 1,471,000 |  |  | 
| Preferred stock | 0 | 0 |  |  | 
| Common stock | 0 | 0 |  |  | 
| Additional paid-in capital | 0 | 0 |  |  | 
| Treasury stock (754,599 shares at September 30, 2016 and March 31, 2016) | 0 | 0 |  |  | 
| Accumulated other comprehensive loss | 312,000 | 212,000 |  |  | 
| Accumulated deficit | (2,232,000) | (2,625,000) |  |  | 
| Total stockholders' equity | (1,920,000) | (2,413,000) |  |  | 
| TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY | (2,348,000) | (942,000) |  |  | 
| Convertible note embedded derivative liability |  |  |  |  | 
| Current liabilities |  |  |  |  | 
| Derivative liability | 4,123,000 | 0 |  |  | 
| Convertible note embedded derivative liability | Eliminations |  |  |  |  | 
| Current liabilities |  |  |  |  | 
| Derivative liability | 0 |  |  |  | 
| Convertible note embedded derivative liability | Parent | Reportable Legal Entities |  |  |  |  | 
| Current liabilities |  |  |  |  | 
| Derivative liability | 4,123,000 |  |  |  | 
| Convertible note embedded derivative liability | Guarantor Subsidiaries | Reportable Legal Entities |  |  |  |  | 
| Current liabilities |  |  |  |  | 
| Derivative liability | 0 |  |  |  | 
| Convertible note embedded derivative liability | Non-Guarantor Subsidiaries | Reportable Legal Entities |  |  |  |  | 
| Current liabilities |  |  |  |  | 
| Derivative liability | 0 |  |  |  | 
| Warrant liability |  |  |  |  | 
| Current liabilities |  |  |  |  | 
| Derivative liability | 1,363,000 | $ 0 |  |  | 
| Warrant liability | Eliminations |  |  |  |  | 
| Current liabilities |  |  |  |  | 
| Derivative liability | 0 |  |  |  | 
| Warrant liability | Parent | Reportable Legal Entities |  |  |  |  | 
| Current liabilities |  |  |  |  | 
| Derivative liability | 1,363,000 |  |  |  | 
| Warrant liability | Guarantor Subsidiaries | Reportable Legal Entities |  |  |  |  | 
| Current liabilities |  |  |  |  | 
| Derivative liability | 0 |  |  |  | 
| Warrant liability | Non-Guarantor Subsidiaries | Reportable Legal Entities |  |  |  |  | 
| Current liabilities |  |  |  |  | 
| Derivative liability | $ 0 |  |  |  |