CONSOLIDATED STATEMENTS OF STOCKHOLDERS EQUITY (USD $) In Thousands, except Share data	Common Stock [Member]	Additional Paid-in Capital [Member]	Treasury Stock [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Total
Balance at Mar. 31, 2011	$ 125	$ 89,792	$ (45,998)	$ 167,924	$ 519	$ 212,362
Balance (in shares) at Mar. 31, 2011	8,519,189					8,519,189
Issuance of shares for option exercises	0	44	0	0	0	44
Issuance of shares for option exercises (in shares)	6,300
Excess tax benefit of exercised stock options	0	52	0	0	0	52
Effect of share-based compensation	1	430	0	0	0	431
Effect of share-based compensation (in shares)	138,900
Purchase of treasury stock	0	0	(1,686)	0	0	(1,686)
Purchase of treasury stock (in shares)	(68,826)
Comprehensive income, net of tax: [Abstract]
Net earnings	0	0	0	3,703	0	3,703
Foreign currency translation adjustment, net of tax	0	0	0	0	15	15
Total comprehensive income					3,718
Balance at Jun. 30, 2011	$ 126	$ 90,318	$ (47,684)	$ 171,627	$ 534	$ 214,921
Balance (in shares) at Jun. 30, 2011	8,595,563					8,595,563