Revenue - Effect on Balance Sheet (Details) - USD ($) $ in Thousands	Mar. 31, 2019	Jul. 01, 2018	Jun. 30, 2018
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Accounts receivable, net	$ 28,410		$ 33,755
Accrued liabilities	40,736		49,841
Deferred margin	0		1,665
Income taxes payable	2,100		2,211
Deferred income tax liabilities	1,325		713
Retained earnings	122,940		$ 122,639
Adjustment | Accounting Standards Update 2014-09
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Accounts receivable, net	(134)	$ (200)
Accrued liabilities	101	100
Deferred margin	(1,670)	$ (1,600)
Income taxes payable	39
Deferred income tax liabilities	291
Retained earnings	1,105
Balances Without Adoption
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Accounts receivable, net	28,544
Accrued liabilities	40,635
Deferred margin	1,670
Income taxes payable	2,061
Deferred income tax liabilities	1,034
Retained earnings	$ 121,835