Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Jun. 30, 2013	Mar. 31, 2013
Current assets:
Cash and cash equivalents	$ 50,968	$ 57,199
Short-term investments	30,568	29,452
Accounts receivable, net of allowance of $1,206 and $740 at June 30, 2013 and March 31, 2013, respectively	75,185	68,612
Unbilled accounts receivable	15,972	15,702
Prepaid expenses	6,392	7,562
Deferred income taxes	8,842	7,674
Restricted cash	342	350
Other current assets	6,917	8,333
Total current assets	195,186	194,884
Property and equipment, net of accumulated depreciation of $26,551 and $26,618 at June 30, 2013 and March 31, 2013, respectively	34,406	36,775
Long-term investments	8,126	8,319
Deferred income taxes	9,319	9,275
Goodwill	35,472	35,472
Intangible assets, net	15,055	15,692
Other long-term assets	3,014	3,502
Total assets	300,578	303,919
Current liabilities:
Accounts payable	7,005	9,231
Accrued employee compensation and benefits	14,767	17,683
Accrued expenses and other current liabilities	20,691	17,811
Income taxes payable	2,951	4,509
Total current liabilities	45,414	49,234
Long-term liabilities	6,104	2,478
Total liabilities	51,518	51,712
Commitments and guarantees
Stockholders' equity:
Undesignated preferred stock, $0.01 par value: Authorized 5,000,000 shares at June 30, 2013 and March 31, 2013; zero shares issued and outstanding at June 30, 2013 and March 31, 2013
Common stock, $0.01 par value: Authorized 120,000,000 shares at June 30, 2013 and March 31, 2013; issued 27,381,886 and 27,033,818 shares at June 30, 2013 and March 31, 2013, respectively; outstanding 25,525,183 and 25,177,115 shares at June 30, 2013 and March 31, 2013, respectively	274	270
Treasury stock, 1,856,703 common shares, at cost, at June 30, 2013 and March 31, 2013, respectively	(9,652)	(9,652)
Additional paid-in capital	175,480	173,056
Retained earnings	114,769	107,247
Accumulated other comprehensive loss	(31,811)	(18,714)
Total stockholders' equity	249,060	252,207
Total liabilities, undesignated preferred stock and stockholders' equity	$ 300,578	$ 303,919