Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Operating activities:
Net loss	$ (12,408)	$ (41,244)
Adjustments to reconcile net loss to net cash used in operating activities
Impairment of goodwill	1,910	14,740
Depreciation	1,934	2,658
Amortization of internally developed software	3,904	3,774
Amortization of intangible assets	1,814	2,537
Amortization of deferred costs to obtain and fulfill contracts	1,534	2,045
Gain on divestiture of Perfect Audience	(5,064)	0
Loss (gain) on disposals of property and equipment and right-of-use assets	26	(1)
Unrealized foreign currency gains	(56)	(118)
Stock-based compensation related to equity awards	2,664	3,971
Provision for bad debts	(249)	48
Net change in operating leases	(511)	0
Deferred income tax benefits	(301)	(398)
Changes in operating assets and liabilities
Accounts receivable	4,170	(668)
Prepaid expenses and other assets	220	(609)
Accounts payable	(687)	(97)
Accrued expenses and other liabilities	(136)	382
Net cash used in operating activities	(1,236)	(12,980)
Investing activities:
Purchases of property and equipment	(604)	(586)
Net proceeds from divestiture of Perfect Audience	4,267	0
Proceeds from disposal of property and equipment	0	8
Capitalization of internally developed software	(2,056)	(2,129)
Net cash provided by (used in) investing activities	1,607	(2,707)
Financing activities:
Proceeds from issuance of common shares through at-the-market offering, net of offering costs of $210	1,643	0
Payment of principal on finance lease liabilities	(1,186)	(1,304)
Employee taxes paid for withheld shares upon equity award settlement	(314)	(265)
Proceeds from employee stock purchase plan, net	117	282
Net cash provided by (used in) financing activities	260	(1,287)
Effect of foreign exchange rate changes on cash and cash equivalents and restricted cash	(29)	(360)
Net increase (decrease) in cash and cash equivalents and restricted cash	602	(17,334)
Cash and cash equivalents and restricted cash:
Beginning of year	11,503	28,837
End of year	12,105	11,503
Supplemental disclosures of other cash flow information:
Cash paid for interest	72	153
Cash paid for income taxes	589	730
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash flows from finance leases	72	0
Operating cash flows from operating leases	8,453	0
Financing cash flows from finance leases	1,186	0
Right-of-use assets obtained in exchange for lease liabilities:
Finance lease liabilities	0	0
Operating lease liabilities	1,656	0
Supplemental disclosures of non-cash investing and financing activities:
Issuance of common stock under employee stock purchase plan	142	305
Purchases of property and equipment recorded in accounts payable and accrued expenses	$ 0	$ 10