Consolidated Statements of Cash Flows (unaudited) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019
Cash flows from operating activities:
Net earnings	$ 119,252	$ 116,457
Adjustments to reconcile net earnings to net cash provided by operating activities:
Depreciation and amortization	51,375	29,096
Provision for losses on accounts receivable	8,093	2,695
Non-cash stock-based compensation	11,754	11,895
Deferred income taxes	(2,883)	2,501
Amortization of debt discount	12,091	2,322
Other adjustments	4,087	3,633
Changes in assets and liabilities:
Decrease in accounts receivable	247,659	68,057
Decrease (increase) in inventories	28,002	(17,946)
Decrease (increase) in other assets	19,643	(99,681)
Decrease in accounts payable	(4,842)	(39,191)
(Decrease) increase in accrued expenses and other liabilities	(32,137)	88,757
Net cash provided by operating activities	462,094	168,595
Cash flows from investing activities:
Proceeds from sale of assets held for sale	14,218
Purchases of property and equipment	(20,688)	(16,922)
Acquisitions, net of cash and cash equivalents acquired	(6,405)	(664,287)
Net cash used in investing activities	(12,875)	(681,209)
Cash flows from financing activities:
Borrowings on senior revolving credit facility		242,936
Repayments on senior revolving credit facility		(242,936)
Borrowings on accounts receivable securitization financing facility		2,364,500
Repayments on accounts receivable securitization financing facility		(2,558,500)
Net borrowings (repayments) under inventory financing facilities	114,321	(96,472)
Proceeds from issuance of convertible senior notes		341,250
Proceeds from issuance of warrants		34,440
Purchase of note hedge related to convertible senior notes		(66,325)
Repurchases of common stock	(25,000)	(27,899)
Other payments	(7,520)	(8,762)
Net cash (used in) provided by financing activities	(489,087)	514,442
Foreign currency exchange effect on cash, cash equivalents and restricted cash balances	718	(3,960)
Decrease in cash, cash equivalents and restricted cash	(39,150)	(2,132)
Cash, cash equivalents and restricted cash at beginning of period	116,297	144,293
Cash, cash equivalents and restricted cash at end of period	77,147	142,161
ABL Facility [Member]
Cash flows from financing activities:
Borrowings on senior revolving credit facility	2,111,674	986,754
Repayments on senior revolving credit facility	$ (2,682,562)	$ (454,544)