Income Taxes (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Mar. 31, 2017	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2017	Mar. 31, 2016	Mar. 31, 2015
Operating Loss Carryforwards [Line Items]
Unrecognized Tax Benefits, Decrease Resulting from Prior Period Tax Positions									$ 668
Tax Credit Carryforward, Amount	$ 4,328				$ 3,611				4,328	$ 3,611
Undistributed Earnings of Foreign Subsidiaries	7,555								7,555
Income Tax Examination, Interest Accrued	297				129				297	129
Income Tax Examination, Interest Expense									170	57	$ 309
Deferred Tax Assets, Operating Loss Carryforwards, Domestic	11,811				17,920				$ 11,811	$ 17,920
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent									35.00%	35.00%	35.00%
Current Federal Tax Expense (Benefit)									$ 3,443	$ (9,338)	$ 18,055
Provision for income taxes	1,418	$ 2,342	$ 1,925	$ (317)	(7,570)	$ 1,141	$ 4,168	$ 2,924	$ 5,368	$ 663	$ 8,332
Effective tax rate (as a percentage)									22.70%	10.50%	23.43%
Liability for unrecognized tax benefits	4,762				3,955				$ 4,762	$ 3,955	$ 3,763
Unrecognized Tax Benefits, Increase Resulting from Prior Period Tax Positions									920	235
Unrecognized Tax Benefits, Decrease Resulting from Prior Period Tax Positions									(252)	(43)
Current State and Local Tax Expense (Benefit)									1,556	(403)	1,887
Current Foreign Tax Expense (Benefit)									498	374	262
Current Income Tax Expense (Benefit)									5,497	(9,367)	20,204
Deferred Federal Income Tax Expense (Benefit)									824	10,474	(9,804)
Deferred State and Local Income Tax Expense (Benefit)									(879)	(100)	(1,771)
Deferred Foreign Income Tax Expense (Benefit)									(74)	(344)	(297)
Deferred Federal, State and Local, Tax Expense (Benefit)									$ (129)	$ 10,030	$ (11,872)
Effective Income Tax Rate Reconciliation, Tax Credit, Research, Percent									(1250000.00%)	(2340000.00%)	(440000.00%)
Effective Income Tax Rate Reconciliation, Deduction, Qualified Production Activity, Percent									(320000.00%)	0.00%	(540000.00%)
Effective Income Tax Rate Reconciliation, Change in Deferred Tax Assets Valuation Allowance, Percent											0.00%
Effective Income Tax Rate Reconciliation, Tax Credit, Foreign, Percent									(170000.00%)	(1020000.00%)	(160000.00%)
Effective Income Tax Rate Reconciliation, Deduction, Other, Percent									0.00%	910000.00%	0.00%
Effective Income Tax Rate Reconciliation, State and Local Income Taxes, Percent									(140000.00%)	(520000.00%)	(200000.00%)
Effective Income Tax Rate Reconciliation,Other Reconciling Items, Percent									0.00%	0.00%	(180000.00%)
Effective Income Tax Rate Reconciliation, Nondeductible Expense, Meals and Entertainment, Percent									80000.00%	370000.00%	80000.00%
Effective Income Tax Rate Reconciliation, Deduction, Percent									(570000.00%)	(360000.00%)	0.00%
Effective Income Tax Rate Reconciliation, Nondeductible Expense, Share-based Compensation Cost, Percent									80000.00%	370000.00%	60000.00%
Effective Income Tax Rate Reconciliation, Other Adjustments, Percent									(360000.00%)	140000.00%	(180000.00%)
Deferred Tax Assets, Deferred Income	7,337				10,682				$ 7,337	$ 10,682
Deferred Tax Assets, Tax Deferred Expense, Compensation and Benefits, Employee Compensation	7,063				5,868				7,063	5,868
Deferred Tax Assets, Tax Deferred Expense, Reserves and Accruals, Deferred Rent	5,446				2,760				5,446	2,760
Deferred Tax Assets, in Process Research and Development	4,328				3,611				4,328	3,611
Deferred Tax Assets, Tax Deferred Expense, Compensation and Benefits, Share-based Compensation Cost	4,028				2,664				4,028	2,664
Deferred Tax Assets, Tax Deferred Expense, Reserves and Accruals, Allowance for Doubtful Accounts	3,974				4,176				3,974	4,176
Deferred Tax Assets, Tax Deferred Expense, Compensation and Benefits, Other	2,642				2,586				2,642	2,586
Deferred Tax Assets, Tax Credit Carryforwards, Foreign	1,173				1,098				1,173	1,098
Deferred Tax Assets, Operating Loss Carryforwards, State and Local	329				445				329	445
Deferred Tax Assets, Inventory	232				68				232	68
Deferred Tax Assets, Tax Deferred Expense, Other	169				265				169	265
Deferred Tax Assets, Gross	48,532				52,143				48,532	52,143
Deferred Tax Liabilities, Intangible Assets	(18,038)				(22,972)				(18,038)	(22,972)
Deferred Tax Liabilities, Deferred Expense, Capitalized Software	(7,494)				(9,644)				(7,494)	(9,644)
Deferred Tax Liabilities, Other	(5,538)				(5,096)				(5,538)	(5,096)
Deferred Tax Liabilities, Other Finite-Lived Assets	(2,348)				(2,434)				(2,348)	(2,434)
Deferred Tax Liabilities, Prepaid Expenses	(1,776)				(1,249)				(1,776)	(1,249)
Deferred Tax Liabilities, Deferred Expense	(35,194)				(41,395)				(35,194)	(41,395)
Deferred Tax Assets, Valuation Allowance	(2,073)				(2,551)				(2,073)	(2,551)
Deferred Tax Assets, Net	11,265				8,198				11,265	8,198
Domestic Tax Authority [Member]
Operating Loss Carryforwards [Line Items]
Operating Loss Carryforwards	31,032				45,202				31,032	45,202
Operating Loss Carryforwards	31,032				$ 45,202				31,032	$ 45,202
State and Local Jurisdiction [Member]
Operating Loss Carryforwards [Line Items]
Operating Loss Carryforwards	950								950
Operating Loss Carryforwards	$ 950								$ 950