Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014
Cash flows from operating activities
Net income	$ 39,330	$ 35,979
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	32,834	33,004
Amortization of debt issue costs and premium and accretion of discount	1,621	1,538
Provision for doubtful accounts and sundry losses	684	1,058
Deferred tax expense (benefit)	11	(430)
Share-based compensation	2,191	665
Unrealized (gain) loss of indemnification assets	(12)	173
Loss on disposition of property and equipment and other intangibles	1	64
Earnings of equity method investment	(199)	(664)
Dividend received from equity method investment		326
Decrease (increase) in assets:
Accounts receivable, net	4,342	(2,045)
Prepaid expenses and other assets	(2,460)	(4,267)
Other long-term assets	(50)	1,811
(Decrease) increase in liabilities:
Accounts payable and accrued liabilities	(1,602)	(4,120)
Income tax payable	(1,875)	1,542
Unearned income	1,909	2,903
Total adjustments	37,395	31,558
Net cash provided by operating activities	76,725	67,537
Cash flows from investing activities
Net (increase) decrease in restricted cash	(543)	238
Intangible assets acquired	(6,757)	(5,841)
Property and equipment acquired	(8,649)	(3,895)
Proceeds from sales of property and equipment	11	3
Net cash used in investing activities	(15,938)	(9,495)
Cash flows from financing activities
Statutory minimum withholding taxes paid on cashless exercises of stock options and restricted stock	(31)	(770)
Net decrease in short-term borrowing	(19,000)	(27,000)
Repayment of short-term borrowing for purchase of equipment and software		(1,200)
Dividends paid	(15,542)	(15,680)
Tax windfall benefits on exercises of stock options		1,482
Issuance of common stock, net		54
Repurchase of common stock	(9,991)
Repayment of other financing agreement		(82)
Repayment of long-term debt	(9,500)	(9,500)
Net cash used in financing activities	(54,064)	(52,696)
Net increase in cash	6,723	5,346
Cash at beginning of the period	32,114	22,485
Cash at end of the period	38,837	27,831
Supplemental disclosure of non-cash activities:
Dividend declared not received from equity method investment		325
Foreign currency translation adjustments	802	$ (6,951)
Payable due to vendor related to software acquired	$ 1,125