Equity (Details Textual) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	1 Months Ended	6 Months Ended		12 Months Ended
	Apr. 30, 2015	Jun. 30, 2015	Jun. 30, 2014	Dec. 31, 2014
Stockholders Equity [Line Items]
Preferred Stock Dividend Rate Percentage		8.00%	8.00%	8.00%
Operating Partnership Units Outstanding		77.6
Preferred stock, liquidation preference per share		$ 25	$ 25	$ 25
Preferred Stock Redemption Price Per Share		$ 25.00
Operating Partnership Issued To The Sellers	$ 2.0	$ 10.4
Parent Company [Member]
Stockholders Equity [Line Items]
Operating Partnership Units Outstanding		64.8
Percentage Of Operating Partnership Units Held		83.50%
Other Partners [Member]
Stockholders Equity [Line Items]
Operating Partnership Units Outstanding		12.8
Percentage Of Operating Partnership Units Held		16.50%
Fair Market Value Of Operating Partnership Units		$ 70.9
Per Unit Fair Market Value Of Operating Partnership Units		$ 5.54
8% Series A Cumulative Redeemable Preferred Stock [Member]
Stockholders Equity [Line Items]
Preferred Stock Dividend Rate Percentage		8.00%
Preferred stock, liquidation preference per share		$ 25.00
Preferred Stock Dividend Rate Per Dollar Amount		$ 2.00