Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Operating activities
Net loss	$ (7,830)	$ (3,161)
Adjustments to reconcile net loss to net cash provided by operating activities:
Depreciation and amortization	7,387	4,172
Deferred income taxes	(2,811)	132
Amortization of deferred commissions	801	539
Foreign currency re-measurement (gain) loss	(171)	142
Non-cash interest and other expense	283	190
Non-cash stock compensation expense	4,628	2,577
Changes in operating assets and liabilities, net of purchase business combinations:
Accounts receivable	5,980	555
Prepaids and other	(1,268)	(1,811)
Accounts payable	(269)	(1,124)
Accrued expenses and other liabilities	(766)	(3,569)
Deferred revenue	(1,087)	883
Net cash provided by (used in) operating activities	4,877	(475)
Investing activities
Purchase of property and equipment	(173)	(426)
Purchase business combinations, net of cash acquired	(2,999)	(34,320)
Net cash used in investing activities	(3,172)	(34,746)
Financing activities
Payments on capital leases	(233)	(298)
Proceeds from notes payable, net of issuance costs	(120)	49,375
Payments on notes payable	(1,781)	(844)
Taxes paid related to net share settlement of equity awards	(1,504)	(668)
Issuance of common stock, net of issuance costs	96	87
Additional consideration paid to sellers of businesses	(1,258)	(1,978)
Net cash provided by (used in) financing activities	(4,800)	45,674
Effect of exchange rate fluctuations on cash	379	(274)
Change in cash and cash equivalents	(2,716)	10,179
Cash and cash equivalents, beginning of period	16,738	22,326
Cash and cash equivalents, end of period	14,022	32,505
Supplemental disclosures of cash flow information:
Cash paid for interest	4,854	2,316
Cash paid for taxes	758	1,044
Noncash investing and financing activities:
Business combination consideration including holdbacks and earnouts	0	5,300
Equipment acquired pursuant to capital lease obligations	$ 44	$ 0