Consolidated Statements of Cash Flows (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013
Cash Flows From Operating Activities:
Net income	$ 12,797	$ 3,860
Adjustments to reconcile net income to net cash provided by operating activities:
Loss from discontinued operations	0	589
Income from equity method investees	(1,441)	0
Stock-based compensation expense	1,683	1,677
Depreciation and amortization	12,177	9,825
Deferred income tax benefit	(2,969)	(2,159)
Loss (gain) on sales of marketable securities	(5,067)	29
Loss on financial instrument obligations	669	0
Loss on change to equity method at fair value	568	0
Other	285	201
Changes in operating assets and liabilities, net of effects of acquisitions:
Accounts receivable	(4,293)	2,149
Prepaid expenses and other assets	(3,334)	(1,842)
Accounts payable and other liabilities	5,330	229
Net cash used in operating activities of discontinued operations	0	(1,185)
Net cash provided by operating activities	16,405	13,373
Cash Flows From Investing Activities:
Purchases of businesses, net of cash acquired	(517)	(1,100)
Purchases of property and equipment	(10,897)	(3,796)
Proceeds from sale of property and equipment	357	0
Investments in equity method investees	(144)	(4,000)
Purchases of marketable securities	(73,658)	(123,015)
Sales of marketable securities	95,740	45,065
Maturities of marketable securities	4,300	122,115
Other investments	(3,000)	0
Reclassification of restricted cash	(20,010)	0
Net cash used in investing activities of discontinued operations	0	(155)
Net cash provided by (used in) investing activities	(7,829)	35,114
Cash Flows From Financing Activities:
Repurchases of common stock - treasury shares	(5,681)	(8,848)
Repayment of subordinated notes	(346)	0
Repayments of capital lease obligations	(186)	(213)
Repayments of long-term debt	(6,607)	(13,000)
Other financing activities	60	0
Net cash used in financing activities	(12,760)	(22,061)
Net increase (decrease) in cash and cash equivalents	(4,184)	26,426
Effect of foreign currency translation on cash and cash equivalents	14	26
Cash and cash equivalents, beginning balance	73,602	71,556
Cash and cash equivalents, ending balance	$ 69,432	$ 98,008