CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) (USD $) In Thousands, except Share data, unless otherwise specified	Sep. 30, 2013	Mar. 31, 2013
CONDENSED CONSOLIDATED BALANCE SHEETS
Accounts receivable, allowances (in dollars)	$ 319	$ 351
Preferred stock, no par value (in dollars per share)
Preferred stock, shares authorized	100,000	100,000
Preferred stock, shares issued	0	0
Common stock, par value (in dollars per share)	$ 0.6666	$ 0.6666
Common stock, shares authorized	20,000,000	20,000,000
Common stock, shares issued	7,833,192	7,980,202
Common stock, shares outstanding	7,833,192	7,980,202