Annual report pursuant to Section 13 and 15(d)

Stock Compensation Expense (Detail)

v2.4.1.9
Stock Compensation Expense (Detail) (USD $)
In Thousands, unless otherwise specified
 12 Months Ended
Mar. 31, 2015
Mar. 31, 2014
Deferred Compensation Arrangement With Individual Share Based Payments [Line Items]    
Allocated Stock compensation expense $ 6,340us-gaap_AllocatedShareBasedCompensationExpense $ 4,693us-gaap_AllocatedShareBasedCompensationExpense
Product development    
Deferred Compensation Arrangement With Individual Share Based Payments [Line Items]    
Allocated Stock compensation expense 0us-gaap_AllocatedShareBasedCompensationExpense
/ us-gaap_IncomeStatementLocationAxis
= us-gaap_CostOfSalesMember 		0us-gaap_AllocatedShareBasedCompensationExpense
/ us-gaap_IncomeStatementLocationAxis
= us-gaap_CostOfSalesMember
Sales and marketing    
Deferred Compensation Arrangement With Individual Share Based Payments [Line Items]    
Allocated Stock compensation expense 0us-gaap_AllocatedShareBasedCompensationExpense
/ us-gaap_IncomeStatementLocationAxis
= us-gaap_SellingAndMarketingExpenseMember 		0us-gaap_AllocatedShareBasedCompensationExpense
/ us-gaap_IncomeStatementLocationAxis
= us-gaap_SellingAndMarketingExpenseMember
General and administrative    
Deferred Compensation Arrangement With Individual Share Based Payments [Line Items]    
Allocated Stock compensation expense $ 6,340us-gaap_AllocatedShareBasedCompensationExpense
/ us-gaap_IncomeStatementLocationAxis
= us-gaap_GeneralAndAdministrativeExpenseMember 		$ 4,693us-gaap_AllocatedShareBasedCompensationExpense
/ us-gaap_IncomeStatementLocationAxis
= us-gaap_GeneralAndAdministrativeExpenseMember