Consolidated Statements of Cash Flows - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Cash flows from operating activities
Net loss	$ (10,018)	$ (11,909)
Adjustments to reconcile net loss to net cash provided by (used in) operating activities:
Depreciation and amortization	3,267	5,731
Deferred income taxes	(57)
Stock-based compensation	2,078	1,919
Gain on disposal of business and online properties		(973)
Other	1	(31)
Change in operating assets and liabilities, net of effect of acquisitions and disposals:
Accounts receivable, net	134	1,872
Prepaid expenses and other current assets	903	462
Other long-term assets	1	(12)
Accounts payable	40	(53)
Accrued expenses and other liabilities	(3,493)	(3,675)
Deferred revenue	(555)	(231)
Net cash used in operating activities	(7,699)	(6,900)
Cash flows from investing activities
Purchases of property and equipment	(1,058)	(1,480)
Purchases of intangible assets	(46)	(4)
Cash received from disposal of businesses and online properties, net of cash disposed	385	650
Restricted deposits	742	136
Other	1	31
Net cash provided by (used in) investing activities	24	(667)
Cash flows from financing activities
Proceeds from exercises of stock options and purchases under ESPP	309	1
Repurchases of common stock	(65)
Taxes paid on net share settlements of restricted stock units	(1,791)	(492)
Cash paid for acquisition holdback	(119)
Other	(16)
Net cash used in financing activities	(1,682)	(491)
Effect of foreign currency on cash and cash equivalents	(3)	1
Change in cash and cash equivalents	(9,360)	(8,057)
Cash and cash equivalents, beginning of period	50,864	38,570
Cash and cash equivalents, end of period	$ 41,504	$ 30,513