CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) (USD $) In Thousands, except Share data, unless otherwise specified	Dec. 31, 2012	Mar. 31, 2012
Accounts receivable, net of allowance for doubtful accounts	$ 288	$ 283
Preferred stock, shares authorized	300,000	300,000
Preferred stock, shares issued	0	0
Common stock, shares authorized	100,000,000	100,000,000
Common stock, par value	$ 0.01	$ 0.01
Common stock, shares issued	9,966,204	9,916,855
Treasury stock, at cost	443,678	426,704