CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands		9 Months Ended
		Sep. 30, 2018	Sep. 30, 2017
Cash flows from operating activities
Net income		$ 146,056	$ 79,576
Adjustments to reconcile net income to net cash used for operating activities:
Net unrealized loss		3,871	6,411
Stock-based compensation		24,657	22,354
Depreciation and amortization		148,875	150,428
Debt restructuring and debt issuance cost amortization		7,717	5,935
Provision for deferred taxes		20,127	29,924
Provision for credit losses		46,930	47,927
Impairment charges		2,424	16,175
Changes in operating assets and liabilities, net of effects of acquisitions:
Accounts receivable and securitized receivables		(685,441)	(595,804)
Prepaid expenses and other current and other long-term assets		111,489	(17,590)
Accounts payable		371,421	228,284
Accrued expenses		(5,385)	(7,740)
Income taxes		4,530	(2,799)
Other current and other long-term liabilities		(8,411)	1,300
Amounts due under tax receivable agreement		(5,727)	(8,927)
Net cash provided by (used for) operating activities		183,133	(44,546)
Cash flows from investing activities
Purchases of property, equipment and capitalized software		(53,416)	(56,095)
Purchase of equity investment		(2,617)	0
Purchases of investment securities		(1,627)	(355)
Maturities of investment securities		181	445
Net cash used for investing activities		(57,479)	(56,005)
Cash flows from financing activities
Repurchase of share-based awards to satisfy tax withholdings		(12,172)	(9,420)
Proceeds from stock option exercises		2,245	595
Net change in deposits		(28,485)	(29,052)
Increase (Decrease) in Federal Funds Purchased		0	28,462
Net activity on other debt		(44,201)	39,554
Borrowings on revolving credit facility		1,219,693	3,385,316
Repayments of revolving credit facility		(1,355,931)	(3,241,719)
Borrowings on term loans		178,000	0
Repayments on term loans		(26,971)	(26,063)
Debt issuance costs		(5,310)	(438)
Net change in securitized debt		(7,826)	29,874
Net cash (used for) provided by financing activities		(80,958)	177,109
Effect of exchange rate changes on cash, cash equivalents and restricted cash		(15,577)	(15,247)
Net change in cash, cash equivalents and restricted cash		29,119	61,311
Cash, cash equivalents and restricted cash, beginning of period	[1]	526,938	213,342
Cash, cash equivalents and restricted cash, end of period	[1]	556,057	274,653
Capital expenditures incurred but not paid		5,608	7,553
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents [Abstract]
Cash, cash equivalents and restricted cash	[1]	$ 526,938	$ 213,342

[1] The following table provides a reconciliation of cash, cash equivalents and restricted cash reported within our unaudited condensed consolidated balance sheets to amounts reported within our unaudited condensed consolidated statements of cash flows for the nine months ended September 30, 2018 and 2017: