Condensed Consolidated Balance Sheets (Parenthetical) (USD $) In Thousands, except Share data, unless otherwise specified	Dec. 31, 2011	Mar. 31, 2011
Condensed Consolidated Balance Sheets [Abstract]
Accounts receivable, net of allowance for doubtful accounts	$ 237	$ 235
Preferred stock, shares authorized	300,000	300,000
Preferred stock, shares issued
Common stock, shares authorized	14,700,000	14,700,000
Common stock, par value	$ 0.01	$ 0.01
Common stock, shares issued	9,916,698	9,846,003
Treasury stock, shares	426,704	416,967