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) (Senior Secured Revolving Credit Facility [Member], USD $)
In Thousands, unless otherwise specified
6 Months Ended
Jun. 30, 2014
Mar. 11, 2014
Dec. 31, 2013
Line of Credit Facility [Line Items]      
Maximum borrowing capacity   $ 500,000  
Current borrowing capacity 155,000    
Credit Facility $ 84,000   $ 22,000
Interest rate at period end (as a percent) 2.43%    
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%