Debt Obligations (Details 1) (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Jun. 30, 2013
Interest Payments	$ 19,467
Principal Payments	48,714
Total	68,181
Mortgage Notes Payable [Member] | Debt Instrument, Redemption, Period One [Member]
Interest Payments	993
Principal Payments	525
Total	1,518
Mortgage Notes Payable [Member] | Debt Instrument, Redemption, Period Two [Member]
Interest Payments	2,234
Principal Payments	6,247
Total	8,481
Mortgage Notes Payable [Member] | Debt Instrument, Redemption, Period Three [Member]
Interest Payments	2,155
Principal Payments	1,335
Total	3,490
Mortgage Notes Payable [Member] | Debt Instrument, Redemption, Period Four [Member]
Interest Payments	2,071
Principal Payments	1,420
Total	3,491
Mortgage Notes Payable [Member] | Debt Instrument, Redemption, Period Five [Member]
Interest Payments	1,981
Principal Payments	1,509
Total	3,490
Mortgage Notes Payable [Member] | Debt Instrument Redemption Period Thereafter [Member]
Interest Payments	10,033
Principal Payments	34,701
Total	44,734
Mortgage Notes Payable [Member] | Debt Instrument Redemption Period Above Below Market Interest [Member]
Interest Payments	0
Principal Payments	2,977
Total	$ 2,977