CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019
Cash flows from operating activities:
Net income (loss)	$ 2,493	$ (11,383)
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Depreciation and amortization	9,287	11,406
Operating lease cost	605	610
Non-cash compensation	474	664
Deferred income tax expense (benefit)	79	(131)
Change in other accrued long-term liabilities	(150)
Loss (gain) on disposal of assets	1	(73)
Remeasurement and other	(14)	(191)
Change in operating assets and liabilities:
(Increase) decrease in accounts receivable	(2,249)	8,802
Decrease in prepaid expenses and other assets	3,304	3,775
Decrease in accounts payable	(600)	(635)
(Decrease) increase in accrued liabilities	(1,319)	1,747
Decrease in operating lease liabilities	(613)	(559)
Decrease in deferred revenue	(2,322)	(1,963)
Net cash provided by operating activities	8,976	12,069
Cash flows from investing activities:
Capital expenditures, net of non-cash capital expenditures summarized below	(2,764)	(3,057)
Proceeds from maturity of short-term investments		18
Acquisition of short-term investments		(18)
Proceeds from disposal of assets	193	223
Proceeds from notes receivable	26	25
Net cash used in investing activities	(2,545)	(2,809)
Cash flows from financing activities:
Proceeds from notes payable	6,374
Principal payments on notes payable	(7,842)	(2,331)
Principal payments on finance leases	(1,474)	(1,407)
Tax withholdings related to stock-based compensation awards	(17)	(235)
Net cash used in financing activities	(2,959)	(3,973)
Effect of exchange rate changes on cash and cash equivalents and restricted cash	(265)	262
Net increase in cash and cash equivalents and restricted cash	3,207	5,549
Cash and cash equivalents and restricted cash at beginning of period	31,271	28,729
Cash and cash equivalents and restricted cash at end of period	34,478	34,278
Supplemental cash flow information:
Cash paid for interest	77	274
Cash paid for income taxes		14
Cash received for income taxes	206	55
Non-cash operating, investing and financing activities:
Decrease in accrued purchases of property and equipment	61	899
Finance leases incurred		40
Increase in right-of-use assets and operating lease liabilities		8,226
Decrease in right-of-use assets for accrued rent		(497)
Increase in right-of-use assets for prepaid rent		14
Financed insurance premiums	$ 434	$ 337