Quarterly report pursuant to Section 13 or 15(d)

Interest Rate Swap (Narrative) (Details)

Interest Rate Swap (Narrative) (Details) (USD $)
In Thousands, unless otherwise specified
1 Months Ended
May 31, 2011
Sep. 30, 2011
Interest Rate Swap [Abstract]    
Interest rate received in swap agreements 5.75%  
Interest rate paid on swap agreements LIBOR plus 3.5%  
Fixed rate added to the LIBOR 3.50%  
Notional amount of interest rate swap agreements $ 250,000  
Fair value of swap agreements   $ 10,489