Consolidated Statements of Cash Flows (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Mar. 31, 2013	Mar. 31, 2012	Mar. 31, 2011
Cash flows from operating activities:
Net loss	$ (22,678)	$ (6,426)	$ (767)
Adjustments to reconcile net loss to net cash flows provided by operating activities:
Tax benefit from stock-based compensation	0	81	1,253
Depreciation and amortization	4,951	4,351	3,432
Stock-based compensation	19,165	5,118	6,714
Excess tax benefits from stock-based compensation	0	0	(3,987)
Deferred income taxes	579	1,425	(1,813)
Gain on liquidation of investment	0	0	(104)
(Gain) loss on disposition of assets	29	1	(15)
Realized gain on marketable securities	(197)	(73)	(12)
Interest on note payable	25	25	0
Adjustment to allowance for doubtful accounts	217	4	80
(Increase) decrease in:
Accounts and notes receivable	(2,422)	2,453	2,505
Taxes receivable and prepaid taxes	0	1,726	(491)
Other assets	(1,201)	93	(204)
Increase (decrease) in:
Accounts payable	565	(1,932)	935
Taxes payable	(44)	(421)	248
Accrued liabilities and compensation	(1,627)	2,127	(2,101)
Deferred revenue	489	705	(262)
Deferred rent	503	944	(23)
Net cash provided by (used in) operating activities	(1,646)	10,201	5,388
Cash flows from investing activities:
Purchase of marketable securities	(23,091)	(18,403)	(14,911)
Sale of marketable securities	28,793	18,971	9,800
Proceeds from the sale of assets	47	0	17
Proceeds from the liquidation of investment	0	0	224
Payments made to develop intangible assets	(183)	0	0
Purchase of property and equipment	(7,110)	(5,135)	(3,591)
Cash paid for acquisition	0	0	(1,930)
Net cash used in investing activities	(1,544)	(4,567)	(10,391)
Cash flows from financing activities:
Proceeds from note payable	0	500	0
Contributions from noncontrolling interest	1,050	0	0
Issuance of common stock	770	262	1,836
Excess tax benefits from stock-based compensation	0	0	3,987
Repurchase of common stock	0	(4,341)	0
Net cash provided by (used in) financing activities	1,820	(3,579)	5,823
Effect of foreign exchange translation on cash	(321)	(350)	566
Increase (decrease) in cash and cash equivalents	(1,691)	1,705	1,386
Cash and cash equivalents:
Beginning of period	5,526	3,821	2,435
End of period	3,835	5,526	3,821
Supplemental non-cash information:
Capitalized stock-based compensation	512	362	474
Supplemental cash flow information:
Income taxes paid	401	328	156
Income tax refunds	$ 60	$ 2,101	$ 264