Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018
Operating activities
Net loss	$ (25,506)	$ (12,641)
Adjustments to reconcile net loss to net cash provided by operating activities:
Depreciation and amortization	23,722	14,604
Deferred income taxes	(11,176)	421
Amortization of deferred commissions	2,555	1,709
Foreign currency re-measurement (gain) loss	155	105
Non-cash interest and other expense	979	616
Non-cash stock compensation expense	18,716	10,380
Non-cash loss on debt extinguishment	2,317	0
Changes in operating assets and liabilities, net of purchase business combinations:
Accounts receivable	6,405	3,173
Prepaids and other	(4,280)	(3,115)
Accounts payable	(903)	(679)
Accrued expenses and other liabilities	(5,037)	(7,097)
Deferred revenue	(2,893)	(2,679)
Net cash provided by operating activities	5,054	4,797
Investing activities
Purchase of property and equipment	(723)	(643)
Purchase of customer relationships	(438)	0
Purchase business combinations, net of cash acquired	(105,771)	(47,850)
Net cash used in investing activities	(106,932)	(48,493)
Financing activities
Payments on finance leases	(499)	(893)
Proceeds from notes payable, net of issuance costs	382,306	49,375
Payments on notes payable	(323,218)	(2,907)
Taxes paid related to net share settlement of equity awards	(6,108)	(4,642)
Issuance of common stock, net of issuance costs	151,549	858
Additional consideration paid to sellers of businesses	(5,886)	(4,294)
Net cash provided by financing activities	198,144	37,497
Effect of exchange rate fluctuations on cash	302	(38)
Change in cash and cash equivalents	96,568	(6,237)
Cash and cash equivalents, beginning of period	16,738	22,326
Cash and cash equivalents, end of period	113,306	16,089
Supplemental disclosures of cash flow information:
Cash paid for interest	17,554	8,170
Cash paid for taxes	2,185	2,480
Sales commissions paid, net of amortization of deferred commissions	3,712	1,327
Noncash investing and financing activities:
Business combination consideration including holdbacks and earnouts	7,926	7,106
Equipment acquired pursuant to capital lease obligations	$ 44	$ 0