Fair Value Measurements (Details) - USD ($) $ in Thousands	Jun. 30, 2016	Dec. 31, 2015
Assets:
Interest Rate Derivative Assets, at Fair Value		$ 31
Total	$ 2,897	4,397
Liabilities:
Interest Rate Derivative Liabilities, at Fair Value	51,134	31,153
Total	51,134	31,153
Level 2 [Member]
Assets:
Interest Rate Derivative Assets, at Fair Value		31
Total	2,897	4,397
Liabilities:
Interest Rate Derivative Liabilities, at Fair Value	51,134	31,153
Total	51,134	31,153
Investments [Member]
Assets:
Investments, Fair Value Disclosure	2,765	4,235
Investments [Member] | Level 2 [Member]
Assets:
Investments, Fair Value Disclosure	2,765	4,235
Demand Obligation [Member]
Assets:
Investments, Fair Value Disclosure	132	131
Demand Obligation [Member] | Level 2 [Member]
Assets:
Investments, Fair Value Disclosure	$ 132	$ 131