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Reverse/Forward Stock Split (Details)
$ in Thousands
 6 Months Ended 12 Months Ended
Nov. 06, 2013
shares
Jun. 30, 2015
USD ($)
Dec. 31, 2014
USD ($)
Dec. 31, 2013
USD ($)
Jun. 11, 2013
director
Class of Stock [Line Items]          
Number of independent directors | director         3
Stock Issued During Period, Shares, Reverse/Forward Stock Splits | shares 643,218        
Proceeds from Issuance of Common Stock       $ 13,600  
Reserve for unexchanged promotional shares   $ 191   $ 13,700  
Adjustments to Additional Paid in Capital, Stock Split   $ 102 $ 346    
Payments for Repurchase of Common Stock     $ 13,400    
Reverse Stock Split          
Class of Stock [Line Items]          
Stockholders' Equity Note, Stock Split, Conversion Ratio 0.04        
Forward Stock Split          
Class of Stock [Line Items]          
Stockholders' Equity Note, Stock Split, Conversion Ratio 25