Business Acquisitions - Assets Acquired and Liabilities Assumed (Details) - USD ($) $ in Thousands	Mar. 31, 2017	Mar. 31, 2016	Mar. 31, 2015
Business Acquisition [Line Items]
Accounts receivable	$ 2,762
Inventory	32,206
Other assets	553
Total current assets	35,521
Property, plant and equipment	9,473
Intangible assets	4,900
Goodwill	19,916	$ 19,974	$ 15,820
Other	551
Total assets acquired	50,445	20,796	18,128
Current liabilities	5,328
Deferred tax liability	9,419
Long-term debt	516
Other long-term obligations	153
Total liabilities assumed	15,416	1,251	204
Net assets acquired	$ 35,029	19,545	$ 17,924
Blumenthal Lansing Company, LLC
Business Acquisition [Line Items]
Accounts receivable		1,536
Inventory		2,915
Other assets		203
Total current assets		4,654
Property, plant and equipment		267
Intangible assets		11,800
Goodwill		4,075
Total assets acquired		20,796
Current liabilities		1,051
Other long-term obligations		200
Total liabilities assumed		1,251
Net assets acquired		$ 19,545