Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019
Operating activities
Net loss	$ (34,240)	$ (13,199)
Adjustments to reconcile net loss to net cash provided by operating activities:
Depreciation and amortization	23,395	15,152
Deferred income taxes	(4,985)	(12,024)
Amortization of deferred costs	1,920	1,735
Foreign currency re-measurement loss	497	(212)
Non-cash interest and other expense	1,108	565
Non-cash stock compensation expense	20,300	11,529
Changes in operating assets and liabilities, net of purchase business combinations:
Accounts receivable	5,188	8,410
Prepaids and other	(6,743)	2,415
Accounts payable	(6,258)	(483)
Accrued expenses and other liabilities	(7,101)	(5,756)
Deferred revenue	2,415	(2,736)
Net cash provided by (used in) operating activities	(4,504)	5,396
Investing activities
Purchase of property and equipment	(696)	(364)
Purchase of customer relationships	(201)	0
Purchase business combinations, net of cash acquired	(67,651)	(82,824)
Net cash used in investing activities	(68,548)	(83,188)
Financing activities
Payments on finance leases	(83)	(357)
Proceeds from notes payable, net of issuance costs	(142)	39,339
Payments on notes payable	(2,700)	(13,749)
Taxes paid related to net share settlement of equity awards	(2,140)	(4,811)
Issuance of common stock, net of issuance costs	41	151,535
Additional consideration paid to sellers of businesses	(9,580)	(3,340)
Net cash provided by (used in) financing activities	(14,604)	168,617
Effect of exchange rate fluctuations on cash	542	798
Change in cash and cash equivalents	(87,114)	91,623
Cash and cash equivalents, beginning of period	175,024	16,738
Cash and cash equivalents, end of period	87,910	108,361
Supplemental disclosures of cash flow information:
Cash paid for interest, net of interest rate swaps	14,861	10,298
Cash paid for taxes	1,260	1,691
Sales commissions paid, net of amortization of deferred commissions	2,488	1,184
Non-cash investing and financing activities:
Business combination consideration including holdbacks and earnouts	345	5,175
Equipment acquired pursuant to financing lease obligations	$ 0	$ 44