Quarterly report pursuant to Section 13 or 15(d)

Borrowings (Senior Secured Revolving Credit Facility) (Details)

v2.4.0.8
Borrowings (Senior Secured Revolving Credit Facility) (Details) (USD $)
 0 Months Ended 9 Months Ended 3 Months Ended 9 Months Ended
May 10, 2013
Sep. 30, 2013
Regions Bank [Member]
Sep. 30, 2013
Revolving Credit Facility [Member]
Regions Bank [Member]
Dec. 20, 2013
Subsequent Event [Member]
Dec. 20, 2013
Subsequent Event [Member]
Revolving Credit Facility [Member]
Regions Bank [Member]
Oct. 31, 2013
Subsequent Event [Member]
Revolving Credit Facility [Member]
Regions Bank [Member]
Sep. 30, 2013
LIBOR [Member]
Minimum [Member]
Regions Bank [Member]
Sep. 30, 2013
LIBOR [Member]
Maximum [Member]
Regions Bank [Member]
Line of Credit Facility [Line Items]                
Maximum borrowing capacity     $ 200,000,000          
Credit Facility borrowing base     75,000,000     83,000,000    
Percentage of outstanding principal, repayment is contingent upon           50.00%    
Contingent borrowing capacity reduction, percentage       25.00%        
Minimum outstanding balance where reduction in borrowing base may occur         48,000,000      
Amount allowed for payment of debt and dividends 5,500,000              
Balance outstanding on the Credit Facility     $ 17,000,000          
Debt instrument, interest rate, effective (as a percent)     2.70%          
Basis spread on LIBOR (as a percent)             2.50% 3.00%
Unused capacity, commitment fee (as a percent)   0.50%