Consolidated Statements of Stockholders' Equity (USD $) In Thousands, except Share data, unless otherwise specified	Total	Common Stock	Additional Paid-In Capital	Accumulated Deficit
Balance at Mar. 31, 2011	$ 53,296	$ 3,436	$ 137,938	$ (88,078)
Balance (in shares) at Mar. 31, 2011		34,364,000
Increase (Decrease) in Stockholders' Equity
Stock option exercises	85	8	77
Stock option exercises (in shares)		68,000
Stock-based compensation	331		331
Issuance of shares pursuant to vesting of restricted stock units		5	(5)
Issuance of shares pursuant to vesting of restricted stock units (in shares)		51,000
Repurchases of common stock	(754)	(58)	(696)
Repurchases of common stock (in shares)	(574,000)	(574,000)
Net income	2,514			2,514
Balance at Mar. 31, 2012	55,472	3,391	137,645	(85,564)
Balance (in shares) at Mar. 31, 2012		33,909,000
Increase (Decrease) in Stockholders' Equity
Stock option exercises	252	20	232
Stock option exercises (in shares)		190,000
Stock-based compensation	279		279
Issuance of shares pursuant to vesting of restricted stock units	(24)	5	(29)
Issuance of shares pursuant to vesting of restricted stock units (in shares)		51,000
Repurchases of common stock	(2,477)	(152)	(2,325)
Repurchases of common stock (in shares)	(1,524,000)	(1,524,000)
Net income	2,379			2,379
Balance at Mar. 31, 2013	55,881	3,264	135,802	(83,185)
Balance (in shares) at Mar. 31, 2013	32,626,000	32,626,000
Increase (Decrease) in Stockholders' Equity
Stock option exercises	255	27	228
Stock option exercises (in shares)		284,000
Warrant exercises	15	2	13
Warrant exercises (in shares)		15,000
Stock-based compensation	300		300
Issuance of shares pursuant to vesting of restricted stock units	(31)	6	(37)
Issuance of shares pursuant to vesting of restricted stock units (in shares)		59,000
Repurchases of common stock	(339)	(19)	(320)
Repurchases of common stock (in shares)	(196,000)	(196,000)
Net income	1,409			1,409
Balance at Mar. 31, 2014	$ 57,490	$ 3,280	$ 135,986	$ (81,776)
Balance (in shares) at Mar. 31, 2014	32,788,000	32,788,000