Acquisitions (Details) - USD ($) $ in Thousands		3 Months Ended		6 Months Ended
	Jul. 08, 2016	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Business Acquisition [Line Items]
Payment to acquire business				$ 0	$ 1,125
Gain on bargain purchases		$ 0	$ 376	$ 0	$ 376
Lawrence Schiff Silk Mills, Inc. [Member]
Business Acquisition [Line Items]
Payment to acquire business	$ 1,125
Gain on bargain purchases	$ 1,501