Commitments, Contingencies and Guarantees (Details Textual) $ in Thousands	9 Months Ended
	Sep. 30, 2015 USD ($)
Other Commitments [Line Items]
Estimated Payments For Put Option Excluding Termination	$ 18,574
Estimated Issuance of Share Capital for Purchase of Ownership Interest on Exercise of Put Options	119
Estimated Payment for Put Options Upon Termination	49,153
Reduction to Redeemable Noncontrolling Interest redemption value	3,599
Estimated Aggregate Amount For Put Options	71,326
Investment Commitments	5,420
Letters of Credit Outstanding, Amount	$ 5,035
Minimum [Member]
Other Commitments [Line Items]
Redeemable noncontrolling interest obligation, year of payment	2015
Maximum [Member]
Other Commitments [Line Items]
Redeemable noncontrolling interest obligation, year of payment	2022