CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018
Operating activities
Net loss	$ (8,609)	$ (17,388)
Adjustments to reconcile net loss to net cash used in operating activities
Depreciation	981	1,557
Amortization of internally developed software	1,705	1,943
Amortization of intangible assets	1,000	1,341
Loss on disposals of property and equipment and right-of-use assets	14	0
Amortization of deferred costs to obtain and fulfill contracts	881	1,145
Unrealized foreign currency gains	(15)	(25)
Stock-based compensation related to equity awards and restricted stock	1,447	2,058
Provision for bad debts	(177)	35
Net change in operating leases	(234)	0
Changes in operating assets and liabilities
Accounts receivable	3,103	2,438
Prepaid expenses and other assets	485	(1,199)
Accounts payable	(777)	(877)
Accrued expenses and other liabilities	(217)	(425)
Net cash used in operating activities	(413)	(9,397)
Investing activities
Purchases of property and equipment	(86)	(200)
Capitalization of internally developed software	(870)	(1,295)
Net cash used in investing activities	(956)	(1,495)
Financing activities
Proceeds from issuance of common shares through equity distribution agreement, net of offering costs of $203	1,504	0
Payment of principal on finance lease liabilities	(682)	(656)
Employee taxes paid for withheld shares upon equity award settlement	(190)	(110)
Proceeds from employee stock purchase plan, net	80	165
Net cash provided by (used in) financing activities	712	(601)
Effect of foreign exchange rate changes on cash and cash equivalents and restricted cash	11	(124)
Net decrease in cash and cash equivalents and restricted cash	(646)	(11,617)
Cash and cash equivalents and restricted cash
Beginning of period	11,503	28,837
End of period	10,857	17,220
Supplemental disclosure of non-cash investing and financing activities
Purchases of property and equipment recorded in accounts payable and accrued expenses	0	308
Issuance of common stock under employee stock purchase plan	$ 88	$ 172