Consolidated Statements of Operations (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Jun. 30, 2016	Jun. 30, 2015
Income Statement [Abstract]
Sales	$ 45,318	$ 44,228
Costs and expenses
Cost of sales	33,021	31,786
Selling, general and administrative expenses	17,574	17,300
Interest income, net	(89)	(72)
Other income, net	(91)	(48)
Total costs and expenses	50,415	48,966
Loss before income taxes	(5,097)	(4,738)
Income tax benefit	(1,811)	(1,670)
Net loss	$ (3,286)	$ (3,068)
Basic and diluted net loss per common share (in dollars per share)	$ (0.36)	$ (0.33)
Weighted average basic and diluted shares outstanding (in shares)	9,053	9,342
Cash dividends per share of common stock (in dollars per share)	$ 0.2	$ 0.18