Recently Issued Accounting Pronouncements (Details) - USD ($) $ in Thousands	Jun. 30, 2018	Apr. 01, 2018	Mar. 31, 2018
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Accounts receivable	$ 126,604	$ 106,340	$ 100,801
Inventories	173,063	205,369	205,760
Other current assets	18,616	14,268	13,877
Other accrued liabilities	$ (19,290)	(18,196)	(12,657)
Calculated under Revenue Guidance in Effect before Topic 606
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Accounts receivable			100,801
Inventories			205,760
Other current assets			13,877
Other accrued liabilities			$ (12,657)
Accounting Standards Update 2014-09 | Difference between Revenue Guidance in Effect before and after Topic 606
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Accounts receivable		5,539
Inventories		(391)
Other current assets		391
Other accrued liabilities		$ (5,539)