| Guarantor and Non-Guarantor Financial Statements - Balance Sheet (Details) - USD ($)
 | Mar. 31, 2017 | Mar. 31, 2016 | Mar. 31, 2015 | Mar. 31, 2014 | 
| Current assets |  |  |  |  | 
| Cash | $ 6,149,000 | $ 11,231,000 | $ 7,069,000 | $ 21,805,000 | 
| Restricted cash | 331,000 | 0 |  |  | 
| Accounts receivable, net of allowances of $597 and $464, respectively | 16,554,000 | 17,519,000 |  |  | 
| Deposits | 121,000 | 213,000 |  |  | 
| Prepaid expenses and other current assets | 510,000 | 583,000 |  |  | 
| Total current assets | 23,665,000 | 29,546,000 |  |  | 
| Property and equipment, net | 2,377,000 | 1,784,000 | 614,000 |  | 
| Cost method investment | 0 | 999,000 |  |  | 
| Deferred tax assets | 352,000 | 500,000 |  |  | 
| Intangible assets, net | 4,565,000 | 12,490,000 | 24,936,000 | 9,074,000 | 
| Goodwill | 76,621,000 | 76,621,000 | 76,747,000 | 4,837,000 | 
| TOTAL ASSETS | 107,580,000 | 121,940,000 |  |  | 
| Intercompany payable/receivable, net | 0 | 0 |  |  | 
| Current liabilities |  |  |  |  | 
| Accounts payable | 19,868,000 | 15,300,000 |  |  | 
| Accrued license fees and revenue share | 8,529,000 | 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 |  |  | 
| Other current liabilities | 1,304,000 | 2,147,000 |  |  | 
| Total current liabilities | 30,774,000 | 38,854,000 |  |  | 
| Convertible notes, net of debt issuance costs and discounts of $6,315 and $0, respectively | 9,685,000 | 0 |  |  | 
| Other non-current liabilities | 782,000 | 815,000 |  |  | 
| Total liabilities | 45,535,000 | 39,669,000 |  |  | 
| Preferred stock | 100,000 | 100,000 |  |  | 
| Common stock | 8,000 | 8,000 |  |  | 
| Additional paid-in capital | 299,580,000 | 295,423,000 |  |  | 
| Treasury stock (754,599 shares at March 31, 2017 and 2016) | (71,000) | (71,000) |  |  | 
| Accumulated other comprehensive loss | (321,000) | (202,000) |  |  | 
| Accumulated deficit | (237,251,000) | (212,987,000) |  |  | 
| Total stockholders' equity | 62,045,000 | 82,271,000 | 91,529,000 | 32,951,000 | 
| TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY | 107,580,000 | 121,940,000 |  |  | 
| Accounts receivable, allowances | 597,000 | 464,000 |  |  | 
| Debt discount | 0 | 568,000 |  |  | 
| Debt discount, long-term | $ 6,315,000 | $ 0 |  |  | 
| Series A Convertible Preferred Stock, par value ($ 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 ($ per share) | $ 0.0001 | $ 0.0001 |  |  | 
| Common stock, shares authorized | 200,000,000 | 200,000,000 |  |  | 
| Common stock, shares issued | 67,329,262 | 67,019,703 |  |  | 
| Common stock, shares outstanding | 66,594,806 | 66,284,606 |  |  | 
| Treasury Stock, shares | 754,599 | 754,599 |  |  | 
| Parent | Reportable Legal Entities |  |  |  |  | 
| Current assets |  |  |  |  | 
| Cash | $ 258,000 | $ 6,712,000 | 4,156,000 | 19,889,000 | 
| Restricted cash | 156,000 |  |  |  | 
| Accounts receivable, net of allowances of $597 and $464, respectively | 0 | 24,000 |  |  | 
| Deposits | 0 | 0 |  |  | 
| Prepaid expenses and other current assets | 282,000 | 331,000 |  |  | 
| Total current assets | 696,000 | 7,067,000 |  |  | 
| Property and equipment, net | 64,000 | 53,000 |  |  | 
| Cost method investment |  | 0 |  |  | 
| Deferred tax assets | 352,000 | 500,000 |  |  | 
| Intangible assets, net | 0 | 0 |  |  | 
| Goodwill | 0 | 0 |  |  | 
| TOTAL ASSETS | 1,112,000 | 7,620,000 |  |  | 
| Intercompany payable/receivable, net | 124,000 | 111,909,000 |  |  | 
| Current liabilities |  |  |  |  | 
| Accounts payable | 1,023,000 | 1,255,000 |  |  | 
| Accrued license fees and revenue share | 0 | 0 |  |  | 
| Accrued compensation | 32,000 | 455,000 |  |  | 
| Short-term debt, net of debt issuance costs and discounts of $0 and $568, respectively |  | 0 |  |  | 
| Other current liabilities | 794,000 | 910,000 |  |  | 
| Total current liabilities | 1,849,000 | 2,620,000 |  |  | 
| Convertible notes, net of debt issuance costs and discounts of $6,315 and $0, respectively | 9,685,000 |  |  |  | 
| Other non-current liabilities | 695,000 | 815,000 |  |  | 
| Total liabilities | 16,523,000 | 3,435,000 |  |  | 
| Preferred stock | 100,000 | 100,000 |  |  | 
| Common stock | 8,000 | 8,000 |  |  | 
| Additional paid-in capital | 299,580,000 | 295,423,000 |  |  | 
| Treasury stock (754,599 shares at March 31, 2017 and 2016) | (71,000) | (71,000) |  |  | 
| Accumulated other comprehensive loss | 0 | 0 |  |  | 
| Accumulated deficit | (191,228,000) | (179,366,000) |  |  | 
| Total stockholders' equity | 108,389,000 | 116,094,000 |  |  | 
| TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY | 124,912,000 | 119,529,000 |  |  | 
| Guarantor Subsidiaries | Reportable Legal Entities |  |  |  |  | 
| Current assets |  |  |  |  | 
| Cash | 5,333,000 | 4,466,000 | 2,825,000 | 1,912,000 | 
| Restricted cash | 175,000 |  |  |  | 
| Accounts receivable, net of allowances of $597 and $464, respectively | 15,740,000 | 17,369,000 |  |  | 
| Deposits | 121,000 | 80,000 |  |  | 
| Prepaid expenses and other current assets | 226,000 | 239,000 |  |  | 
| Total current assets | 21,595,000 | 22,154,000 |  |  | 
| Property and equipment, net | 2,296,000 | 1,690,000 |  |  | 
| Cost method investment |  | 999,000 |  |  | 
| Deferred tax assets | 0 | 0 |  |  | 
| Intangible assets, net | 2,647,000 | 8,660,000 |  |  | 
| Goodwill | 70,377,000 | 70,377,000 |  |  | 
| TOTAL ASSETS | 96,915,000 | 103,880,000 |  |  | 
| Intercompany payable/receivable, net | (107,000) | (95,732,000) |  |  | 
| Current liabilities |  |  |  |  | 
| Accounts payable | 18,697,000 | 13,997,000 |  |  | 
| Accrued license fees and revenue share | 8,312,000 | 9,549,000 |  |  | 
| Accrued compensation | 1,041,000 | 801,000 |  |  | 
| Short-term debt, net of debt issuance costs and discounts of $0 and $568, respectively |  | 10,432,000 |  |  | 
| Other current liabilities | 510,000 | 1,237,000 |  |  | 
| Total current liabilities | 28,560,000 | 36,016,000 |  |  | 
| Convertible notes, net of debt issuance costs and discounts of $6,315 and $0, respectively | 0 |  |  |  | 
| Other non-current liabilities | 87,000 | 0 |  |  | 
| Total liabilities | 28,647,000 | 36,016,000 |  |  | 
| Preferred stock | 0 | 0 |  |  | 
| Common stock |  | 0 |  |  | 
| Additional paid-in capital | 0 | 0 |  |  | 
| Treasury stock (754,599 shares at March 31, 2017 and 2016) | 0 |  |  |  | 
| Accumulated other comprehensive loss | (1,704,000) | (1,368,000) |  |  | 
| Accumulated deficit | (37,376,000) | (26,500,000) |  |  | 
| Total stockholders' equity | (39,080,000) | (27,868,000) |  |  | 
| TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY | (10,433,000) | 8,148,000 |  |  | 
| Non-Guarantor Subsidiaries | Reportable Legal Entities |  |  |  |  | 
| Current assets |  |  |  |  | 
| Cash | 558,000 | 53,000 | $ 88,000 | $ 4,000 | 
| Restricted cash | 0 |  |  |  | 
| Accounts receivable, net of allowances of $597 and $464, respectively | 814,000 | 126,000 |  |  | 
| Deposits | 0 | 133,000 |  |  | 
| Prepaid expenses and other current assets | 2,000 | 13,000 |  |  | 
| Total current assets | 1,374,000 | 325,000 |  |  | 
| Property and equipment, net | 17,000 | 41,000 |  |  | 
| Cost method investment |  | 0 |  |  | 
| Deferred tax assets | 0 | 0 |  |  | 
| Intangible assets, net | 1,918,000 | 3,830,000 |  |  | 
| Goodwill | 6,244,000 | 6,244,000 |  |  | 
| TOTAL ASSETS | 9,553,000 | 10,440,000 |  |  | 
| Intercompany payable/receivable, net | (16,000) | (16,177,000) |  |  | 
| Current liabilities |  |  |  |  | 
| Accounts payable | 148,000 | 48,000 |  |  | 
| Accrued license fees and revenue share | 217,000 | 73,000 |  |  | 
| Accrued compensation | 0 | 97,000 |  |  | 
| Short-term debt, net of debt issuance costs and discounts of $0 and $568, respectively |  | 0 |  |  | 
| Other current liabilities | 0 | 0 |  |  | 
| Total current liabilities | 365,000 | 218,000 |  |  | 
| Convertible notes, net of debt issuance costs and discounts of $6,315 and $0, respectively | 0 |  |  |  | 
| Other non-current liabilities | 0 | 0 |  |  | 
| Total liabilities | 365,000 | 218,000 |  |  | 
| Preferred stock | 0 | 0 |  |  | 
| Common stock |  | 0 |  |  | 
| Additional paid-in capital | 0 | 0 |  |  | 
| Treasury stock (754,599 shares at March 31, 2017 and 2016) | 0 | 0 |  |  | 
| Accumulated other comprehensive loss | 1,383,000 | 1,166,000 |  |  | 
| Accumulated deficit | (8,647,000) | (7,121,000) |  |  | 
| Total stockholders' equity | (7,264,000) | (5,955,000) |  |  | 
| TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY | (6,899,000) | (5,737,000) |  |  | 
| Convertible note embedded derivative liability |  |  |  |  | 
| Current liabilities |  |  |  |  | 
| Derivative liability | 3,218,000 | 0 |  |  | 
| Convertible note embedded derivative liability | Parent | Reportable Legal Entities |  |  |  |  | 
| Current liabilities |  |  |  |  | 
| Derivative liability | 3,218,000 |  |  |  | 
| 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 | 1,076,000 | $ 0 |  |  | 
| Warrant liability | Parent | Reportable Legal Entities |  |  |  |  | 
| Current liabilities |  |  |  |  | 
| Derivative liability | 1,076,000 |  |  |  | 
| 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 |  |  |  |