Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Cash flows from operating activities
Net loss	$ (26,838)	$ (23,190)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation and amortization	10,111	10,270
Non-cash lease expense	2,063
Deferred income taxes	(23)	46
Stock-based compensation	9,364	9,431
Gain from sale of asset	(24)
Other	173	15
Change in operating assets and liabilities, net of effect of acquisitions and disposals:
Accounts receivable, net	(1,938)	(1,310)
Prepaid expenses and other current assets	1,473	(904)
Other long-term assets	112	274
Operating lease ROU assets and liabilities	(2,527)
Accounts payable	6,362	(806)
Accrued expenses and other liabilities	(2,927)	3,954
Deferred revenue	349	(1,082)
Net cash used in operating activities	(4,270)	(3,302)
Cash flows from investing activities
Purchases of property and equipment	(6,997)	(7,162)
Purchases of intangible assets	(3)	(45)
Proceeds from sale of assets	24
Cash paid for acquisitions, net of cash acquired	(1,900)	(10,349)
Other		8
Net cash used in investing activities	(8,876)	(17,548)
Cash flows from financing activities
Borrowings from revolving line of credit	4,000
Proceeds from exercises of stock options and purchases under ESPP	761	2,016
Proceeds from issuance of common stock		23,367
Taxes paid on net share settlements of restricted stock units	(2,661)	(3,961)
Cash paid for acquisition holdback	(625)
Cash paid for contingent consideration liability	(934)	(905)
Cash paid for debt issuance costs	(110)
Other	(91)	(68)
Net cash provided by financing activities	340	20,449
Effect of foreign currency on cash, cash equivalents and restricted cash	(3)	36
Change in cash, cash equivalents and restricted cash	(12,809)	(365)
Cash, cash equivalents and restricted cash, beginning of period	31,935	32,300
Cash, cash equivalents and restricted cash, end of period	19,126	31,935
Supplemental disclosure of cash flows
Cash paid for interest	27	5
Cash paid for taxes	$ 66	$ 38