Significant Accounting Policies (Details) - USD ($)	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015	Dec. 31, 2015
Significant Accounting Policies [Line Items]
Option to purchase noncontrolling interest impairment charge	$ 0	$ 0	$ 0	$ 0
Beginning Balance			69,471,000
Granted			3,844,000
Ending Balance	65,367,000		65,367,000		$ 69,471,000
Redeemable Noncontrolling Interest [Member]
Significant Accounting Policies [Line Items]
Beginning Balance			69,471,000	$ 194,951,000	194,951,000
Redemptions			0		(155,042,000)
Granted			0		7,703,000
Changes in redemption value			(4,141,000)		22,809,000
Currency Translation Adjustments			37,000		(950,000)
Ending Balance	$ 65,367,000		$ 65,367,000		$ 69,471,000