XML 85 R60.htm IDEA: XBRL DOCUMENT v2.4.0.8
Derivative Instruments and Hedging Activities: (Details) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Derivative [Line Items]      
Marking-to-market interest rate agreements $ 0 $ 0 $ 3,237
Interest Rate Swap
     
Derivative [Line Items]      
Fair Value     $ 3,237