Equity - Changes in Other Comprehensive Income (Details) $ in Thousands	6 Months Ended
	Jun. 30, 2015 USD ($)
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Gains and Losses on Cash Flow Hedges, Beginning	$ 404
Gains and Losses on Cash Flow Hedges, Ending	(2,226)
Accumulated Net Gain (Loss) from Designated or Qualifying Cash Flow Hedges [Member]
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Gains and Losses on Cash Flow Hedges, Beginning	404
Other comprehensive loss before reclassifications	(5,374)
Amounts of loss reclassified from accumulated other comprehensive income to interest expense	2,744
Gains and Losses on Cash Flow Hedges, Ending	$ (2,226)