Revenue Recognition - Schedule of Contract Assets and Contract Liabilities (Details) - USD ($) $ in Thousands	3 Months Ended
	Jun. 30, 2019	Jun. 30, 2018
Contract Asset
Balance, March 31, 2019	$ 10,441	$ 11,251
Net additions to sales return allowance	3,776	1,780
Actual returns	(8,713)	(8,212)
Balance, June 30, 2019	5,504	4,819
Contract Liability
Balance, March 31, 2019	(24,787)	(23,156)
Net additions to sales return allowance	(14,632)	(10,965)
Actual returns	24,447	22,604
Balance, June 30, 2019	$ (14,972)	$ (11,517)