Annual report pursuant to Section 13 and 15(d)

Inventories Inventories - Valuation Reserve Accounts (Details)

v3.7.0.1
Inventories Inventories - Valuation Reserve Accounts (Details) - Inventory Valuation Reserve [Member] - USD ($)
$ in Thousands
12 Months Ended
Mar. 31, 2017
Mar. 31, 2016
Mar. 31, 2015
Movement in Valuation Allowances and Reserves [Roll Forward]      
Balance, beginning of period $ 1,287 $ 1,116 $ 893
Additions in reserve 348 383 279
Charged to reserve (306) (212) (56)
Balance, end of period $ 1,329 $ 1,287 $ 1,116