Unaudited Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Cash flows from operating activities
Net income	$ 22,275	$ 26,734
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	17,795	16,273
Amortization of debt issue costs and accretion of discount	621	415
Operating lease amortization	1,173	1,472
Provision for doubtful accounts and sundry losses	104	815
Deferred tax benefit	(1,080)	(882)
Share-based compensation	3,483	3,279
Loss on disposition of property and equipment and other intangibles	81	22
Earnings of equity method investment	(338)	(222)
(Increase) decrease in assets:
Accounts receivable, net	11,729	3,961
Prepaid expenses and other assets	(1,836)	(5,326)
Other long-term assets	(2,477)	(2,558)
Increase (decrease) in liabilities:
Accrued liabilities and accounts payable	(20,662)	(18,339)
Income tax payable	3,307	191
Unearned income	1,075	4,754
Operating lease liabilities	(1,409)	(1,281)
Other long-term liabilities	84	31
Total adjustments	11,650	2,605
Net cash provided by operating activities	33,925	29,339
Cash flows from investing activities
Additions to software	(6,055)	(8,917)
Property and equipment acquired	(3,357)	(5,071)
Proceeds from sales of property and equipment	0	32
Net cash used in investing activities	(9,412)	(13,956)
Cash flows from financing activities
Statutory withholding taxes paid on share-based compensation	(2,706)	(5,928)
Net proceeds under short-term borrowings	0	15,000
Repayment of short-term borrowings for purchase of equipment and software	(792)	(34)
Dividends paid	0	(3,617)
Repurchase of common stock	(7,300)	(17,486)
Repayment of long-term debt	(20,560)	(3,563)
Net cash used in financing activities	(31,358)	(15,628)
Effect of foreign exchange rate on cash, cash equivalents and restricted cash	828	0
Net decrease in cash, cash equivalents and restricted cash	(6,017)	(245)
Cash, cash equivalents and restricted cash at beginning of the period	131,121	86,746
Cash, cash equivalents and restricted cash at end of the period	125,104	86,501
Reconciliation of cash, cash equivalents and restricted cash
Cash and cash equivalents	103,521	73,183
Restricted cash	21,583	13,318
Cash, cash equivalents and restricted cash	125,104	86,501
Supplemental disclosure of cash flow information:
Cash paid for interest	6,372	7,390
Cash paid for income taxes	2,083	3,496
Supplemental disclosure of non-cash activities:
Payable due to vendor related to equipment and software acquired	$ 1,482	$ 893