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Income Taxes - Provision for Income Taxes (Details) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2016
Mar. 31, 2015
Current    
Federal $ 0 $ 0
State 4 40
Current, total 4 40
Total provision 4 40
Noncontrolling Interest    
Current    
Total provision 0 30
Parent    
Current    
Total provision $ 4 $ 10