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
Issuance of shares for option exercises	0	216	0	0	0	216
Issuance of shares for option exercises (in shares)	29,993
Excess tax benefit of exercised stock options - TOTAL	0	303	0	0	0	303
Effect of share-based compensation (in shares)	150,908
Purchase of treasury stock	0	0	(10,034)	0	0	(10,034)
Purchase of treasury stock (in shares)	(402,500)
Effect of share-based compensation - TOTAL	1	1,079	0	0	0	1,080
Comprehensive income, net of tax: [Abstract]
Net earnings	0	0	0	10,767	0	10,767
Foreign currency translation adjustment (net of tax of $2)	0	0	0	0	(182)	(182)
Total comprehensive income						10,585
Balance at Sep. 30, 2011	$ 126	$ 91,390	$ (56,032)	$ 178,691	$ 337	$ 214,512
Balance (in shares) at Sep. 30, 2011	8,297,590