Commitments, Contingencies and Guarantees (Details Textual) - Jun. 30, 2015 - USD ($) $ in Thousands	Total
Other Commitments [Line Items]
Estimated Payments For Put Option Excluding Termination	$ 15,654
Estimated Issuance of Share Capital for Purchase of Ownership Interest on Exercise of Put Options	112
Estimated Payment for Put Options Upon Termination	132,747
Estimated Aggregate Amount For Put Options	148,401
Investment Commitments	6,894
Letters of Credit Outstanding, Amount	$ 5,051
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