CONSOLIDATED STATEMENTS OF CASH FLOWS (UNAUDITED) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019
Cash flows from operating activities:
Net income (loss)	$ (169,595)	$ 22,351
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Depreciation and amortization	27,682	12,666
Amortization and write-off of deferred loan costs	2,315	3,073
Amortization of debt discount	2,049	389
Share-based employee compensation expense	3,689	9,257
Impairment of goodwill and intangible assets	199,500
Deferred income taxes	(16,447)	10,789
Decrease (increase) in accounts receivable, net	61,257	(3,754)
Decrease in inventory	14,319	8,719
Decrease in other current assets	1,363	1,057
Increase (decrease) in accounts payable	9,411	(5,872)
(Decrease) increase in accrued salaries and benefits	(2,532)	570
Decrease in other current liabilities	(5,925)	(8,266)
Increase (decrease) in deferred revenue	403	(2,725)
Other	3,454	1,345
Net cash flows provided by operating activities	130,943	49,599
Cash flows from investing activities:
Acquisition of property and equipment	(10,362)	(8,918)
Business acquisitions, net of cash acquired		(1,062,818)
Net cash flows used in investing activities	(10,362)	(1,071,736)
Cash flows from financing activities:
Proceeds from issuance of long-term debt	196,525	1,399,945
Payments of long-term debt	(236,375)	(347,879)
Payments related to tax withholding for share-based compensation	(2,949)	(1,135)
Exercise of stock options	601	370
Deferred loan costs		(30,189)
Principal payments related to financing leases	(306)	(22)
Change in cash overdraft and other	(20,289)	3,530
Net cash flows (used in) provided by financing activities	(62,793)	1,024,620
Effect of exchange rate changes on cash		(12)
Net increase in cash and cash equivalents	57,788	2,471
Cash and cash equivalents, beginning of period	2,486	1,933
Cash and cash equivalents, end of period	$ 60,274	$ 4,404