Condensed Consolidated Balance Sheets (Parenthetical) (USD $) In Thousands, except Share data, unless otherwise specified	Jun. 30, 2012	Mar. 31, 2012
Condensed Consolidated Balance Sheets [Abstract]
Accounts receivable, net of allowance for doubtful accounts	$ 287	$ 283
Preferred stock, shares authorized	300,000	300,000
Preferred stock, shares issued
Common stock, shares authorized	100,000,000	100,000,000
Common stock, par value	$ 0.01	$ 0.01
Common stock, shares issued	9,935,937	9,916,855
Treasury stock, at cost	441,443	426,704