Long-Term Obligations (Details) (USD $)
1 Months Ended 1 Months Ended 9 Months Ended
Jun. 30, 2013
Revolving credit facility
Sep. 30, 2014
Revolving credit facility
Jun. 30, 2013
Revolving credit facility
LIBOR
Jun. 30, 2013
Revolving credit facility
Prime rate
Sep. 30, 2014
Term borrowings
item
Sep. 30, 2014
Term borrowings
Prime rate
Long-Term Obligations            
Maximum borrowing capacity $ 13,000,000          
Variable interest rate basis     LIBOR prime   prime
Basis spread on variable rate (as a percent)     2.50%     0.50%
Interest rate at the end of period (as a percent)   3.25%     3.75%  
Annual commitment fee 20,000          
Commitment fee for quarterly unused capacity (as a percent) 0.375%          
Number of equal monthly payments of principal plus interest         42  
Current borrowing capacity   13,000,000        
Borrowings outstanding   $ 0