XML 14 R48.htm IDEA: XBRL DOCUMENT v3.2.0.727
Equity - Narrative (Details) - USD ($)
$ / shares in Units, $ in Millions
 3 Months Ended 6 Months Ended
Sep. 30, 2015
Sep. 10, 2015
Jul. 30, 2015
Jun. 30, 2015
Jun. 30, 2014
Jun. 30, 2015
Jun. 30, 2014
Dec. 31, 2014
Class of Stock [Line Items]                
Common Stock, Authorized       450,000,000   450,000,000   450,000,000
Common Stock, Par Value       $ 0.01 $ 0.01 $ 0.01 $ 0.01 $ 0.01
Common Stock, Issued       137,467,243   137,467,243   136,624,157
Common Stock, Outstanding       137,467,243   137,467,243   136,624,157
Preferred Stock, Shares Authorized       50,000,000   50,000,000    
Preferred Stock, Par or Stated Value Per Share       $ 0.01   $ 0.01    
Preferred Stock, Shares Issued       0   0    
Preferred Stock, Shares Outstanding       0   0    
Issuance of stock for purchases of property and equipment (shares)           346,554    
Issuance of stock for purchase of property and equipment           $ 9.8    
Dividends declared per common share (in dollars per share)       $ 0.34 $ 0.37 $ 0.74 $ 0.37  
Subsequent Event                
Class of Stock [Line Items]                
Dividends Payable, Date Declared     Jul. 30, 2015          
Dividends declared per common share (in dollars per share)     $ 0.34          
Dividends Payable, Date to be Paid Sep. 30, 2015              
Dividends Payable, Date of Record   Sep. 10, 2015            
Additional Paid-In Capital                
Class of Stock [Line Items]                
Issuance of stock for purchase of property and equipment           $ 9.8