Quarterly report pursuant to Section 13 or 15(d)

Stockholders' Equity - Narrative (Details)

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Stockholders' Equity - Narrative (Details) - USD ($)
 1 Months Ended 9 Months Ended
Aug. 06, 2015
Aug. 04, 2015
Jul. 28, 2015
May. 13, 2015
May. 04, 2015
Feb. 19, 2015
Jan. 22, 2015
Apr. 30, 2015
Sep. 30, 2015
Sep. 30, 2014
Related Party Transaction [Line Items]                    
Stock repurchase program, amount authorized     $ 15,000,000   $ 5,000,000          
Stock repurchase program, amounts available for future purchases                 $ 10,000,000  
Noncontrolling interest, ownership by noncontrolling owners                 5.00%  
Treasury stock in the open market   $ 3,500,000     $ 3,500,000          
Treasury stock, shares acquired     162,442 186,519            
Treasury stock, value, acquired, cost method   $ 5,000,000   $ 5,000,000            
Warrants, number of securities called by warrants               88,097    
Warrants, exercise price               $ 3.5043    
Proceeds from exercise of warrants               $ 309,000 $ 309,000 $ 4,948,000
George K. Broady                    
Related Party Transaction [Line Items]                    
Treasury stock, shares acquired             91,817      
Treasury stock, value, acquired, cost method $ 1,500,000     $ 1,500,000   $ 1,100,000        
Stock repurchase program, number of shares repurchased daily             5,000