Investments Monster LP Transaction (Details) - USD ($) $ in Thousands			3 Months Ended								12 Months Ended
		May. 27, 2015	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Schedule of Investments [Line Items]
Current Fiscal Year End Date											--12-31
Fair Value, Option, Changes in Fair Value, Gain (Loss)											$ (2,943)	$ 0	$ 0
Total revenue			$ 917,170	$ 713,595	$ 738,395	$ 750,356	$ 883,228	$ 714,269	$ 716,211	$ 728,415	3,119,516	3,042,123	2,573,655
Gross profit			371,740	328,912	$ 337,007	$ 347,406	378,109	$ 355,278	$ 366,410	$ 365,512	1,385,065	1,465,309	1,501,533
Assets, Current			1,075,242				1,385,058				1,075,242	1,385,058
Other non-current assets			16,620				16,173				16,620	16,173
Liabilities, Current			1,203,525				1,293,598				1,203,525	1,293,598
Other non-current liabilities			113,540				$ 129,531				$ 113,540	129,531
Capital Unit, Class A [Member]
Schedule of Investments [Line Items]
Proceeds from Sale of Interest in Partnership Unit				$ 10,000
Partners' Capital Account, Units, Sale of Units											2,000,000
Capital Unit, Class A [Member] | Monster LP [Member]
Schedule of Investments [Line Items]
Proceeds from Sale of Interest in Partnership Unit		$ 350,000
Partners' Capital Account, Units, Sale of Units		70,000,000
Capital Units, Class C [Member] | Monster LP [Member]
Schedule of Investments [Line Items]
Stock or Units Available for Distributions		20,321,839
Capital Unit, Class B [Member]
Schedule of Investments [Line Items]
Proceeds from Sale of Interest in Partnership Unit			4,800
Realized Investment Gains (Losses)			$ 100
Partners' Capital Account, Units, Sale of Units		64,000,000	2,529,998
Capital Unit, Class B [Member] | Monster LP [Member]
Schedule of Investments [Line Items]
Proceeds from Sale of Interest in Partnership Unit		$ 285,000
Minimum [Member] | Monster LP [Member]
Schedule of Investments [Line Items]
Preferred Stock, Liquidation Preference, Value		1,116,000
Minimum [Member] | Capital Unit, Class A [Member] | Monster LP [Member]
Schedule of Investments [Line Items]
Preferred Stock, Liquidation Preference, Value		486,000
First Tier [Member] | Maximum [Member] | Capital Unit, Class B [Member] | Monster LP [Member]
Schedule of Investments [Line Items]
Preferred Stock, Liquidation Preference, Value		680,000
Second Tier [Member] | Minimum [Member] | Capital Unit, Class B [Member] | Monster LP [Member]
Schedule of Investments [Line Items]
Preferred Stock, Liquidation Preference, Value		703,000
Second Tier [Member] | Maximum [Member] | Capital Unit, Class B [Member] | Monster LP [Member]
Schedule of Investments [Line Items]
Preferred Stock, Liquidation Preference, Value		$ 1,116,000
Monster LP [Member]
Schedule of Investments [Line Items]
Noncash or Part Noncash Acquisition, Investments Acquired											$ 122,075	$ 0	$ 0
Total revenue	[1]										83,897
Gross profit	[1]										(18,596)
Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Extraordinary Items, Noncontrolling Interest	[1]										(107,914)
Equity Method Investment, Summarized Financial Information, Net Income (Loss)	[1]										(107,914)
Assets, Current			$ 153,408								153,408
Other non-current assets			482,295								482,295
Liabilities, Current			275,342								275,342
Other non-current liabilities			$ 7,086								$ 7,086
Monster LP [Member]
Schedule of Investments [Line Items]
Fair Value Assumptions, Expected Volatility Rate		60.00%
Fair Value Assumptions, Risk Free Interest Rate		1.30%
Fair Value Inputs, Discount Rate											22.00%
Monster LP [Member]
Schedule of Investments [Line Items]
Fair Value, Option, Changes in Fair Value, Gain (Loss)											$ 3,400

[1] The summarized financial information is presented for the period beginning May 28, 2015, after completion of the Ticket Monster disposition transaction that resulted in the Company obtaining its minority limited partner interest in Monster LP.