Consolidated Statements of Cash Flows (Unaudited) (USD $) In Thousands	9 Months Ended
	Sep. 30, 2011	Sep. 30, 2010
Cash flows from operating activities
Net income	$ 36,161	$ 22,481
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	4,988	4,798
Stock-based compensation expense	4,997	6,628
Deferred taxes	14,496	10,982
Provision for bad debts	56	389
Gain on sale of securities		(411)
Changes in operating assets and liabilities
(Increase) in accounts receivable	(6,232)	(4,559)
(Increase) decrease in prepaid expenses and other assets	(6,519)	450
(Decrease) in accrued employee compensation	(2,119)	(1,606)
Increase in deferred revenue	466	616
Increase in accounts payable, accrued expenses and other liabilities	497	1,815
Net cash provided by operating activities	46,791	41,583
Securities available-for-sale:
Proceeds from maturities and sales	20,845	55,480
Purchases	(27,719)	(57,194)
Securities and cash provided as collateral	3,498	28
Purchases of furniture, equipment and leasehold improvements	(2,517)	(4,684)
Capitalization of software development costs	(2,898)	(1,331)
Net cash (used in) investing activities	(8,791)	(7,701)
Cash flows from financing activities
Cash dividend on common stock and Series B Preferred Stock	(10,236)	(8,039)
Purchase of treasury stock		(23,258)
Proceeds from exercise of stock options and grants of restricted stock, net of surrenders on stock option exercises and withholding tax on stock vesting	449	1,958
Windfall tax benefits from stock-based compensation	5,473	906
Other	(207)	522
Net cash (used in) financing activities	(4,521)	(27,911)
Effect of exchange rate changes on cash and cash equivalents	(851)	(567)
Cash and cash equivalents
Net increase for the period	32,628	5,404
Beginning of year	124,994	103,341
End of period	157,622	108,745
Cash paid during the period:
Income taxes paid	9,574	1,638
Non-cash activity:
Conversion of Series B Preferred Stock to common stock	$ 30,315