Consolidated Statements of Cash Flows - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014
Cash Flows From Operating Activities:
Net income (loss)	$ (32,339)	$ 9,699
Adjustments to reconcile net income to net cash provided by operating activities:
Loss from equity method investees	4,818	3,402
Stock-based compensation expense	2,338	2,305
Depreciation and amortization	17,768	18,127
Impairment of marketable securities	30,626	0
Deferred income tax provision (benefit)	(5,230)	408
Loss (gain) on sales of marketable securities	1,430	(4,065)
Loss (gain) on financial instrument obligations	(1,063)	752
Loss on change to equity method at fair value	2,807	568
Gain on non-monetary exchange	(9,326)	0
Other	627	561
Changes in operating assets and liabilities, net of effects of acquisitions:
Accounts receivable	13,865	(4,402)
Prepaid expenses and other assets	(1,281)	709
Accounts payable and other liabilities	(2,568)	2,725
Net cash provided by operating activities	22,472	30,789
Cash Flows From Investing Activities:
Purchases of businesses, net of cash acquired	0	(517)
Purchases of property and equipment	(4,477)	(13,610)
Proceeds from sale of property and equipment	39	413
Investments in equity method investees	0	(144)
Purchases of marketable securities	(25,590)	(99,296)
Sales of marketable securities	39,446	105,112
Maturities of marketable securities	0	4,302
Proceeds from issuance of financial instrument obligations	374	171
Repayments of financial instrument obligations	(451)	0
Other investments	0	(3,000)
Reclassification of restricted cash	1,140	(20,264)
Net cash provided by (used in) investing activities	10,481	(26,833)
Cash Flows From Financing Activities:
Repurchases of common stock - treasury shares	(4,612)	(10,354)
Repurchases of common stock - reverse/forward stock split	0	(10,071)
Repayment of subordinated notes	0	(346)
Repayments of capital lease obligations	(589)	(289)
Repayments of long-term debt	(9,910)	(9,911)
Other financing activities	0	60
Net cash used in financing activities	(15,111)	(30,911)
Net increase (decrease) in cash and cash equivalents	17,842	(26,955)
Effect of foreign currency translation on cash and cash equivalents	(6)	30
Cash and cash equivalents, beginning balance	51,910	73,602
Cash and cash equivalents, ending balance	$ 69,746	$ 46,677