Consolidated Statements of Cash Flows - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Operating activities
Net income	$ 123,693	$ 111,090	[1]
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation	10,667	7,976
Stock-based compensation	23,093	15,186
Provision for losses on accounts receivable	12,988	6,836
Amortization of deferred financing costs and discounts	1,914	1,822
Amortization of intangible assets	52,654	27,362
Amortization of premium on receivables	1,544	990
Deferred income taxes	(3,453)	(2,128)
Equity method investment loss	2,377	2,193	[1]
Other non-cash operating income	0	(215)
Changes in operating assets and liabilities (net of acquisitions):
Restricted cash	(19,283)	23,743
Accounts receivable	(236,564)	(182,761)
Prepaid expenses and other current assets	(16,453)	(2,086)
Other assets	(2,673)	(11,696)
Accounts payable, accrued expenses and customer deposits	103,711	124,311
Net cash provided by operating activities	54,215	122,623
Investing activities
Acquisitions, net of cash acquired	0	(4,092)
Purchases of property and equipment	(14,796)	(11,739)
Other	(6,327)	(4,914)
Net cash used in investing activities	(21,123)	(20,745)
Financing activities
Proceeds from issuance of common stock	15,230	387
Borrowings (payments) on securitization facility, net	85,000	(63,000)
Principal payments on notes payable	(33,363)	(25,875)
Borrowings from revolver – A Facility	90,000	40,000
Payments on revolver – A Facility	(159,949)	(110,000)
Borrowings on swing line of credit, net	21,639	0
Other	537	(19)
Net cash provided by (used in) financing activities	19,094	(158,507)
Effect of foreign currency exchange rates on cash	19,356	8,795
Net increase (decrease) in cash and cash equivalents	71,542	(47,834)
Cash and cash equivalents, beginning of period	475,018	447,152
Cash and cash equivalents, end of period	546,560	399,318
Supplemental cash flow information
Cash paid for interest	33,190	15,310
Cash paid for income taxes	$ 88,503	$ 11,824

[1] Reflects the impact of the Company's adoption of Accounting Standards Update 2016-09, Compensation-Stock Compensation (Topic 718): Improvements to Employee Share-Based Payment Accounting, to simplify several aspects of the accounting for share-based compensation, including the income tax consequences.