Significant Accounting Policies (Details) - USD ($)	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 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			8,819,000
Ending Balance	60,174,000		60,174,000		$ 69,471,000
Redeemable Noncontrolling Interest [Member]
Significant Accounting Policies [Line Items]
Beginning Balance			69,471,000	$ 194,951,000	194,951,000
Redemptions			(890,000)		(155,042,000)
Granted			2,274,000		7,703,000
Changes in redemption value			(10,626,000)		22,809,000
Currency Translation Adjustments			(55,000)		(950,000)
Ending Balance	$ 60,174,000		$ 60,174,000		$ 69,471,000