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) (JPMorgan Chase Bank [Member], USD $)
3 Months Ended
Mar. 31, 2014
Mar. 11, 2014
Line of Credit Facility [Line Items]    
Maximum borrowing capacity   $ 500,000,000
Current borrowing capacity   95,000,000
Credit Facility $ 68,000,000  
Interest rate at period end (as a percent) 2.41%  
Unused capacity, commitment fee (as a percent) 0.50%  
Minimum [Member]
   
Line of Credit Facility [Line Items]    
Basis Spread on LIBOR (as a percent) 1.75%  
Maximum [Member]
   
Line of Credit Facility [Line Items]    
Basis Spread on LIBOR (as a percent) 2.75%