Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Cash flows from operating activities:
Net income (loss)	$ 26,721	$ (19,090)	$ 1,817
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Amortization and depreciation	3,661	4,105	6,683
Acquisition and disposition related costs		(68)	(62)
Loss on sales of fixed assets, net			7
Gain on sale of discontinued operations	(22,195)	(422)	(1,492)
Gain on sales and disposals of intangible assets, net			(3,774)
Gain on sale of Archeo assets	(1,496)
Allowance for doubtful accounts and advertiser credits	321	1,528	1,722
Stock-based compensation	10,025	11,903	9,264
Deferred income taxes		24,390	1,968
Change in certain assets and liabilities:
Accounts receivable, net	999	2,536	(5,732)
Refundable taxes, net	4	(34)	167
Prepaid expenses and other current assets	695	(104)	(338)
Accounts payable	(4,085)	(2,199)	3,513
Accrued expenses and other current liabilities	(1,008)	(480)	(39)
Deferred revenue	(433)	729	(49)
Other non-current liabilities	(456)	(375)	(59)
Net cash provided by operating activities	12,753	22,419	13,596
Cash flows from investing activities:
Purchases of property and equipment	(4,107)	(3,265)	(3,041)
Proceeds from sales of property and equipment			9
Proceeds from sales of intangible assets			3,775
Purchases of intangibles and changes in other non-current assets	(51)	(217)	(154)
Proceeds from sale of discontinued operations, net	25,249	304	1,058
Proceeds from sale of Archeo assets, net	731
Net cash provided by (used in) investing activities	21,822	(3,178)	1,647
Cash flows from financing activities:
Proceeds from offering, net of costs		32,527
Tax withholding related to restricted stock awards	(284)	(1,080)	(3,150)
Repurchase of Class B common stock for treasury stock	(3,822)	(2,486)	(119)
Common stock dividends payments	(1,685)	(3,330)
Proceeds from exercises of stock options, issuance and vesting of restricted stock and employee stock purchase plan, net	339	4,248	3,008
Net cash provided by (used in) financing activities	(5,452)	29,879	(261)
Net increase in cash and cash equivalents	29,123	49,120	14,982
Cash and cash equivalents at beginning of period	80,032	30,912	15,930
Cash and cash equivalents at end of period	109,155	80,032	30,912
Supplemental disclosure of cash flow information:
Cash received (paid) during the period for income taxes, net	(28)	(70)	19
Cash paid during the period for interest, net	55	74	80
Supplemental disclosure of non-cash investing and financing activities:
Property and equipment acquired in accounts payable and accrued expenses	$ 195	$ 157	$ 167