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Income Taxes - Provision for Income Taxes (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2016
Jun. 30, 2015
Jun. 30, 2016
Jun. 30, 2015
Current        
Federal $ 0 $ 0 $ 0 $ 0
State 3 25 7 65
Current, total 3 25 7 65
Total provision 3 25 7 65
Noncontrolling Interest        
Current        
Total provision 0 19 0 49
Parent        
Current        
Total provision $ 3 $ 6 $ 7 $ 16