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Consolidated Statement of Equity (Deficit) (Parentheticals) - $ / shares
4 Months Ended 8 Months Ended 12 Months Ended
Dec. 31, 2013
Aug. 31, 2013
Dec. 31, 2015
Dec. 31, 2014
Statement Of Stockholders Equity [Abstract]        
Issuance of treasury stock, shares   446,501    
Purchases of treasury stock, shares 152,746   84,678 44,911
Preferred Stock, Shares Authorized     60,000,000  
Preferred Stock, No Par Value     $ 0 $ 0