CONSOLIDATED STATEMENTS OF CASH FLOWS (UNAUDITED) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Cash flows from operating activities:
Net income	$ 4,214	$ 21,336
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	3,582	1,123
Amortization and write-off of deferred loan costs	900	522
Amortization of debt discount	389	2,044
Share-based employee compensation expense	2,359	1,410
Deferred income taxes	4,355	7,090
Increase in accounts receivable, net	(31,123)	(12,712)
Decrease in inventory	6,025
Decrease in other current assets	168	2,037
Increase (decrease) in accounts payable	6,555	(916)
Decrease in accrued salaries and benefits	(767)	(9,007)
Increase (decrease) in other current liabilities	5,576	(1,185)
Increase in deferred revenue	2,309
Other	660	625
Net cash flows provided by operating activities	5,202	12,367
Cash flows from investing activities:
Acquisition of property and equipment	(3,898)	(1,946)
Business acquisitions, net of cash acquired	(1,062,818)
Net cash flows used in investing activities	(1,066,716)	(1,946)
Cash flows from financing activities:
Proceeds from issuance of long-term debt	1,274,925	8,400
Payments of long-term debt	(167,134)	(8,793)
Payments related to tax withholding for share-based compensation	(342)	(894)
Exercise of stock options	234	771
Deferred loan costs	(30,189)
Change in cash overdraft and other	891	378
Net cash flows provided by (used in) financing activities	1,078,385	(138)
Effect of exchange rate changes on cash	(16)	69
Net increase in cash and cash equivalents	16,855	10,352
Cash and cash equivalents, beginning of period	1,933	28,440
Cash and cash equivalents, end of period	$ 18,788	$ 38,792