CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY (USD $) In Thousands, except Share data	Common Stock	Additional Paid-In Capital	Accumulated other Comprehensive Income (Loss)	Accumulated Deficit	Total
Beginning balance, amount at Mar. 31, 2010	$ 63	$ 212,077	$ 0	$ (198,840)	$ 13,300
Beginning balance, shares at Mar. 31, 2010	63,172,536
Issuance of common stock under stock plans	2	2,272	0	0	2,274
Issuance of common stock under stock plans, shares	1,869,546
Issuance of common stock on exercise of warrant	0	880	0	0	880
Issuance of common stock on exercise of warrant, shares	293,281
Issuance of common stock for acquisition of Central Host, Inc.	0	600	0	0	600
Issuance of common stock for acquisition of Central Host, Inc., shares	432,276
Issuance of restricted common stock	0	278	0	0	278
Issuance of restricted common stock, shares	200,000
Repurchase of common stock	(3)	(7,808)	0	0	(7,811)
Repurchase of common stock, shares	(3,588,609)
Buyback of employee stock options	0	(539)	0	0	(539)
Stock compensation charge	0	458	0	0	458
Income tax benefit from stock-based compensation					0
Unrealized investment gain (loss)	0	0	(73)	0	(73)
Net income	0	0	0	6,494	6,494
Ending balance, amount at Mar. 31, 2011	62	208,218	(73)	(192,346)	15,861
Ending balance, shares at Mar. 31, 2011	62,379,030
Issuance of common stock under stock plans	2	3,050	0	0	3,052
Issuance of common stock under stock plans, shares	2,261,724
Issuance of common stock for acquisition of businesses, net of issuance costs	7	31,565	0	0	31,572
Issuance of common stock for acquisition of businesses, net of issuance costs, shares	6,692,569
Repurchase of common stock	0	(2,400)	0	0	(2,400)
Repurchase of common stock, shares	(653,830)
Buyback of employee stock options and stock purchase rights	0	(384)	0	0	(384)
Stock compensation charge	0	1,506	0	0	1,506
Income tax benefit from stock-based compensation					0
Unrealized investment gain (loss)	0	0	15	0	15
Net income	0	0	0	69,228	69,228
Ending balance, amount at Mar. 31, 2012	71	241,555	(58)	(123,118)	118,450
Ending balance, shares at Mar. 31, 2012	70,679,493
Issuance of common stock under stock plans	1	2,400	0	0	2,401
Issuance of common stock under stock plans, shares	1,503,238
Cost of issuance of common stock	0	(43)	0	0	(43)
Repurchase of common stock	0	(419)	0	0	(419)
Repurchase of common stock, shares	(73,751)
Stock compensation charge	0	2,634	0	0	2,634
Income tax benefit from stock-based compensation	0	49	0	0	(49)
Unrealized investment gain (loss)	0	0	22	0	22
Net income	0	0	0	13,939	13,939
Ending balance, amount at Mar. 31, 2013	$ 72	$ 246,176	$ (36)	$ (109,179)	$ 137,033
Ending balance, shares at Mar. 31, 2013	72,108,980