CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $) In Thousands	3 Months Ended
	Jun. 30, 2011	Jun. 30, 2010
CASH FLOWS PROVIDED BY OPERATING ACTIVITIES:
Net income	$ 16,985	$ 12,645
Adjustments to reconcile net income to net cash provided by operations:
Depreciation and amortization	13,015	12,213
Stock award compensation	5,323	5,304
Deferred income taxes	(1,200)	(6,079)
Other	45	336
Net change in assets and liabilities, net of effects from currency fluctuations:
Accounts receivable	64,773	62,573
Prepaid expenses and other current assets	3,787	19,659
Other assets	(6,557)	1,452
Accounts payable and accrued expenses	(31,561)	(35,066)
Deferred revenue	(52,356)	(64,919)
Income taxes	2,952	8,024
Net cash provided by operating activities	15,206	16,142
CASH FLOWS USED IN INVESTING ACTIVITIES:
Purchase of property and equipment	(5,020)	(4,268)
Purchase of capitalized software	(3,593)	(4,506)
Net cash used in investing activities	(8,613)	(8,774)
CASH FLOWS PROVIDED BY (USED IN) FINANCING ACTIVITIES:
Net proceeds from exercise of stock options including excess tax benefits	5,142	2,227
Employee contribution to stock purchase plans	779	719
Repurchase of common stock		(16,160)
Net cash provided by (used in) financing activities	5,921	(13,214)
EFFECT OF EXCHANGE RATE CHANGES ON CASH	2,108	(5,381)
NET INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS	14,622	(11,227)
CASH AND CASH EQUIVALENTS AT BEGINNING OF PERIOD	180,244	149,897
CASH AND CASH EQUIVALENTS AT END OF PERIOD	$ 194,866	$ 138,670