CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
CASH FLOWS FROM OPERATING ACTIVITIES:
Net loss	$ (6,181)	$ (544)
Non-cash adjustments to reconcile net loss to cash used in operating activities:
Stock-based compensation expense	2,261	1,220
Loss on foreign currency transactions	22	708
Bad debt expense (recovery)	258	(13)
Depreciation and amortization	4,420	3,529
Operating lease costs	535	526
Deferred income tax expense (benefit)	115	(592)
Gain loss on disposal or sale of assets		(1,395)
Amortization of deferred financing costs	19	14
Net change in:
Accounts receivable	7,082	8,237
Inventory	168	(829)
Deferred sales commissions	1,579	1,997
Prepaid expenses and other current assets	197	(789)
Income tax receivable or payable	71	271
Other assets	(71)	144
Accounts payable	(685)	(1,595)
Accrued compensation	2,178	2,441
Other current liabilities	(1,934)	(2,622)
Operating lease liabilities	(478)	(544)
Other long-term liabilities		(31)
Deferred revenue	(13,038)	(16,700)
Net cash used in operating activities	(3,482)	(6,567)
CASH FLOWS FROM INVESTING ACTIVITIES:
Purchases of property and equipment	(3,786)	(4,714)
Proceeds from sale of assets		996
Net cash used in investing activities	(3,786)	(3,718)
CASH FLOWS FROM FINANCING ACTIVITIES:
Proceeds from the exercise of stock options	42	744
Payment of deferred financing costs	(66)	(2)
Payments under financing lease liabilities	(115)	(110)
Net cash (used in) provided by financing activities	(139)	632
Decrease in cash, cash equivalents, and restricted cash	(7,407)	(9,653)
Effect of exchange rate changes in cash, cash equivalents, and restricted cash	(486)	(180)
Net decrease in cash, cash equivalents, and restricted cash	(7,893)	(9,833)
Cash, cash equivalents, and restricted cash—beginning of period	43,064	38,174
Cash, cash equivalents, and restricted cash—end of period	35,171	28,341
Cash paid during the periods for:
Interest	34	46
Income taxes, net of refund	207	258
Noncash operating, investing and financing activities:
Operating right-of-use assets obtained in exchange for operating lease liabilities	59	656
Accrued liability for purchase of property and equipment	$ 1,126	$ 1,033