Annual report pursuant to Section 13 and 15(d)

Derivative Financial Instruments - Narrative (Details)

v3.3.1.900
Derivative Financial Instruments - Narrative (Details) - Cash Flow Hedging [Member] - Designated as Hedging Instrument [Member]
$ in Thousands
12 Months Ended
Dec. 31, 2005
USD ($)
derivative_agreement
Dec. 31, 2013
USD ($)
Derivative [Line Items]    
Unamortized balance of settled agreements   $ 741
Treasury Lock [Member]    
Derivative [Line Items]    
Number of derivative agreements | derivative_agreement 2  
Debt instrument, term 10 years  
Proceeds from hedge $ 3,200