Income Taxes (Details 3) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013
Deferred income tax assets:
Accounts receivable	$ 196	$ 332
Inventories	2,852	2,806
Accrued expenses	3,093	3,016
State net operating loss and credit carryforwards	6,031	5,992
Share-based compensation	1,718	1,861
Intangibles	2,110	3,031
Gross Deferred income tax assets	16,000	17,038
Valuation allowance	(5,815)	(5,467)
Net	10,185	11,571
Deferred income tax liabilities:
Property, plant and equipment	1,248	1,823
Unremitted earnings of foreign subsidiaries	2,308	986
Other	250	268
Gross Deferred income tax liabilities	3,806	3,077
Net deferred income tax asset	$ 6,379	$ 8,494