Risk Management and Use of Derivative Financial Instruments (Details 5) In Thousands, unless otherwise specified	Jun. 30, 2014 USD ($)	Jun. 30, 2014 Not Designated as Hedging Instrument Interest rate swap Euro USD ($) instrument	Jun. 30, 2014 Not Designated as Hedging Instrument Interest rate swap Euro EUR (€)	Jun. 30, 2014 Derivatives in Cash Flow Hedging Relationships Interest rate swap USD ($) instrument	Jun. 30, 2014 Derivatives in Cash Flow Hedging Relationships Interest rate swap Euro USD ($) instrument	Jun. 30, 2014 Derivatives in Cash Flow Hedging Relationships Interest rate swap Euro EUR (€)	Jun. 30, 2014 Derivatives in Cash Flow Hedging Relationships Interest rate caps Euro USD ($) instrument	Jun. 30, 2014 Derivatives in Cash Flow Hedging Relationships Interest rate caps Euro EUR (€)
Derivative Disclosure
Derivative number of instruments		3	3	14	2	2	2	2
Notional Amount			€ 108,695	$ 131,277		€ 8,276		€ 109,907
Fair value	$ (15,810)	$ (10,733)		$ (3,846)	$ (1,243)		$ 12