CONSOLIDATED CONDENSED STATEMENTS OF CASH FLOWS (Unaudited) Statements - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019
Cash flows from operating activities:
Net income (loss)	$ (138,790)	$ 77,399
Adjustments to reconcile net income (loss) to net cash used in operating activities:
Depreciation and amortization	18,357	16,999
Lease amortization expense	16,313	15,279
Amortization of debt issuance costs	1,823	1,295
Debt discount amortization	1,483	0
Inventory step-up on acquisition	0	10,703
Impairment loss	174,269	0
Deferred taxes, net	8,684	10,514
Non-cash share-based compensation	4,794	6,964
Loss on disposal of long-lived assets	123	657
Unrealized net (gains) losses on hedging instruments	(14,059)	2,677
Change in assets and liabilities, net of effect from acquisitions:
Accounts receivable, net	(73,177)	(156,548)
Inventories	73,029	57,509
Other assets	13,984	(1,182)
Accounts payable and accrued expenses	(72,492)	(51,924)
Accrued employee compensation and benefits	(16,876)	(10,331)
Accrued warranty expense	143	1,159
Change in operating leases, net	(13,438)	(14,335)
Income taxes receivable/payable, net	(13,118)	(16,224)
Other liabilities	8,627	(1,370)
Net cash used in operating activities	(20,321)	(50,759)
Cash flows from investing activities:
Capital expenditures	(25,097)	(23,403)
Note receivable, net of discount	(5,234)	0
Acquisitions, net of cash acquired	0	(463,105)
Proceeds from sales of property and equipment	0	15
Net cash used in investing activities	(30,331)	(486,493)
Cash flows from financing activities:
Proceeds from issuance of convertible notes	258,750	0
Proceeds from issuance of long-term debt	9,766	480,000
Premium paid for capped call confirmations	(31,775)	0
Debt issuance cost	(9,119)	(18,971)
(Repayments of) proceeds from credit facilities, net	(89,029)	125,167
Repayments of long-term debt	(5,504)	(2,325)
Repayments of financing leases	(206)	(232)
Exercise of stock options	130	0
Dividends paid, net	(1,891)	(1,893)
Acquisition of treasury stock	(21,953)	(27,394)
Net cash provided by financing activities	109,169	554,352
Effect of exchange rate changes on cash and cash equivalents	(767)	409
Net increase in cash and cash equivalents	57,750	17,509
Cash and cash equivalents at beginning of period	106,666
Cash and cash equivalents at end of period	164,416
Supplemental disclosures:
Cash paid for income taxes, net	1,692	4,602
Cash paid for interest and fees	16,489	17,061
Non-cash investing and financing activities:
Acquisition of minority interest	0	18,538
Issuance of treasury stock and common stock for compensatory stock awards released from restriction	19,143	19,304
Accrued capital expenditures at period-end	$ 1,861	$ 1,629