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Summary of Significant Accounting Policies (Details)
$ in Thousands
3 Months Ended 12 Months Ended
Dec. 31, 2014
USD ($)
Dec. 31, 2015
USD ($)
item
Sep. 30, 2014
USD ($)
Sep. 30, 2013
USD ($)
Summary of Significant Accounting Policies        
Number of states in which the Company operates | item   48    
Minimum decline in percentage of cash flows required for further impairment analysis   15.00%    
Impairment of long-lived assets $ 0 $ 0 $ 0 $ 0
Federal statutory effective income tax rate   35.00%    
Impairment of Intangible Assets   $ 0