Non-controlling Interests (Details) - USD ($) $ in Thousands		6 Months Ended
	Jan. 02, 2013	Jun. 30, 2015	Dec. 31, 2014	Jun. 30, 2014	Dec. 31, 2013
Noncontrolling Interest [Line Items]
Stockholders' Equity Attributable to Noncontrolling Interest		$ 6,363	$ 6,389
Noncontrolling Interest [Member]
Noncontrolling Interest [Line Items]
Stockholders' Equity Attributable to Noncontrolling Interest		$ 6,363	$ 6,389	$ 7,016	$ 5,648
Non-controlling interest in Operating Partnership [Member] | Noncontrolling Interest [Member]
Noncontrolling Interest [Line Items]
Operating Partnership Units Issued	212,000
Operating Partnership Units		212,000
Noncontrolling Interest, Ownership Percentage by Noncontrolling Owners		0.60%
Non-controlling interest of joint venture partner [Member] | Noncontrolling Interest [Member]
Noncontrolling Interest [Line Items]
Noncontrolling Interest, Ownership Percentage by Noncontrolling Owners		5.00%
Stockholders' Equity Attributable to Noncontrolling Interest		$ 1,500