Fair Value Measurements Fair Value, Reconciliation of Level 3 - Assets (Details) - USD ($) $ in Thousands		3 Months Ended
		Mar. 31, 2016	Mar. 31, 2015	Dec. 31, 2015	Dec. 31, 2014
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Fair Value, Option, Changes in Fair Value, Gain (Loss)		$ (1,100)	$ 0
AFS Securities, Beginning Asset Value		130,725	0
AFS Securities, Ending Asset Value		129,625	0
Unrealized Gains (Losses) Still Held - Assets	[1]	(1,100)	0
Fair Value, Measurement with Unobservable Inputs Reconciliations, Recurring Basis, Liability Value		13,938	1,373	$ 10,781	$ 1,983
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Purchases, (Sales), Issuances, (Settlements)		(285)	(331)
Gain from changes in fair value of contingent consideration	[2]	3,442	(279)
Fair Value, Measurement with Unobservable Inputs, Unrealized Gain Loss	[1]	3,316	(279)
Convertible debt securities [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Fair Value, Measured on Recurring Basis, Gain (Loss) Included in Earnings	[3]	38	0
AFS Securities, Beginning Asset Value		10,116	2,527
AFS Debt Security, (losses) included in OCI		19	230
AFS Securities, Ending Asset Value		10,173	2,757
Unrealized Gains (Losses) Still Held - Assets	[1]	57	230
Redeemable preferred shares [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
AFS Securities, Beginning Asset Value		22,834	4,910
AFS Debt Security, (losses) included in OCI		(135)	(10)
AFS Securities, Ending Asset Value		22,699	4,900
Unrealized Gains (Losses) Still Held - Assets	[1]	(135)	$ (10)
Monster LP [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Fair Value, Option, Changes in Fair Value, Gain (Loss)		$ 100

[1] Represents the unrealized losses or gains recorded in earnings and/or other comprehensive income (loss) during the period for assets and liabilities classified as Level 3 that are still held (or outstanding) at the end of the period.

[2] Changes in the fair value of contingent consideration liabilities are classified within "Acquisition-related expense (benefit), net" on the condensed consolidated statements of operations.

[3] Represents accretion of interest income and changes in the fair value of an embedded derivative for the three months ended March 31, 2016.