Consolidated Statements of Cash Flows (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012
Cash flows from operating activities
Net income	$ 52,883	$ 39,604
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	9,305	5,896
Stock-based compensation expense	6,419	6,184
Deferred taxes	669	1,958
Non-cash out-of-period adjustment	(972)
Provision for bad debts	295	409
Other		757
Changes in operating assets and liabilities
(Increase) decrease in accounts receivable	(4,770)	2,347
(Increase) in prepaid expenses and other assets	(1,689)	(82)
(Decrease) in accrued employee compensation	(835)	(3,990)
(Decrease) in deferred revenue	(1,065)	(262)
Increase in accounts payable, accrued expenses and other liabilities	7,089	449
Net cash provided by operating activities	67,329	53,270
Cash flows from investing activities
Acquisition of business, net of cash acquired	(37,827)
Securities available-for-sale:
Proceeds from sales	30,900	13,577
Proceeds from maturities	10,690	15,463
Purchases	(49,578)	(6,376)
Purchases of furniture, equipment and leasehold improvements	(9,357)	(4,955)
Capitalization of software development costs	(5,406)	(3,873)
Other	4	(37)
Net cash (used in) provided by investing activities	(60,574)	13,799
Cash flows from financing activities
Cash dividend on common stock	(15,028)	(12,388)
Exercise of stock options	1,816	5,997
Withholding tax payments on restricted stock vesting and stock option exercises	(5,001)	(20,003)
Excess tax benefits from stock-based compensation	3,069	13,639
Repurchase of common stock		(72,603)
Other	(239)	(222)
Net cash (used in) financing activities	(15,383)	(85,580)
Effect of exchange rate changes on cash and cash equivalents	(615)	(1,008)
Cash and cash equivalents
Net (decrease) for the period	(9,243)	(19,519)
Beginning of year	128,908	169,620
End of period cash	119,665	150,101
Less: Cash classified within assets from discontinued operations	656
End of period cash from continuing operations	119,009	150,101
Cash paid during the period:
Cash paid for income taxes	17,894	10,602
Non-cash investing and financing activity:
Conversion of common stock non-voting to common stock voting		15,880
Liabilities assumed in connection with the Xtrakter acquisition:
Fair value of assets acquired	44,745
Cash paid for the capital stock	(37,827)
Liabilities assumed	$ 6,918