Consolidated Statements of Cash Flows (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013
Cash flows from operating activities
Net income	$ 53,170	$ 52,883
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	12,954	9,305
Stock-based compensation expense	7,179	6,419
Deferred taxes	1,575	669
Other	1,482	(677)
Changes in operating assets and liabilities:
(Increase) in accounts receivable	(2,321)	(4,770)
Decrease in prepaid expenses and other assets	1,245	1,856
(Decrease) in accrued employee compensation	(5,617)	(494)
(Decrease) increase in income and other tax liabilities	(110)	2,270
Increase (decrease) in deferred revenue	558	(1,065)
(Decrease) increase in accounts payable, accrued expenses and other liabilities	(1,526)	933
Net cash provided by operating activities	68,589	67,329
Cash flows from investing activities
Acquisition of business, net of cash acquired		(37,827)
Securities available-for-sale:
Proceeds from sales		30,900
Proceeds from maturities	13,536	10,690
Purchases	(4,181)	(49,578)
Purchases of furniture, equipment and leasehold improvements	(4,002)	(9,357)
Capitalization of software development costs	(7,412)	(5,406)
Other	595	4
Net cash (used in ) investing activities	(1,464)	(60,574)
Cash flows from financing activities
Cash dividend on common stock	(18,062)	(15,028)
Exercise of stock options	1,390	1,816
Withholding tax payments on restricted stock vesting and stock option exercises	(5,008)	(5,001)
Excess tax benefits from stock-based compensation	3,203	3,069
Repurchases of common stock	(25,442)
Other	(42)	(239)
Net cash (used in) financing activities	(43,961)	(15,383)
Effect of exchange rate changes on cash and cash equivalents	(755)	(615)
Cash and cash equivalents
Net increase (decrease) for the period	22,409	(9,243)
Beginning of period	132,691	128,908
End of period	155,100	119,665
Less: Cash classified within assets from discontinued operations		656
End of period cash from continuing operations	155,100	119,009
Cash paid during the year
Cash paid for income taxes	25,952	17,894
Liabilities assumed in connection with the Xtrakter acquisition:
Fair value of assets acquired		44,745
Acquisition of business, net of cash acquired		(37,827)
Liabilities assumed		$ 6,918