XML 34 R40.htm IDEA: XBRL DOCUMENT v3.2.0.727
Equity (Details)
 6 Months Ended
Jun. 30, 2015
vote
shares
May. 04, 2015
Dec. 31, 2014
shares
Class of Stock [Line Items]      
Preferred stock authorized 20,000,000   20,000,000
Preferred stock shares issued 0   0
Preferred stock shares outstanding 0   0
Spark HoldCo      
Class of Stock [Line Items]      
Noncontrolling interest ownership percentage 22.37% 21.82%  
Noncontrolling interest ownership percentage by noncontrolling owners 77.63% 78.18%  
Common Class A      
Class of Stock [Line Items]      
Common stock outstanding 3,097,193   3,000,000
Common stock voting rights | vote 1    
Common Class B      
Class of Stock [Line Items]      
Common stock outstanding 10,750,000   10,750,000
Common stock voting rights | vote 1