Quarterly report pursuant to Section 13 or 15(d)

Derivative Financial Instruments (Narrative) (Details)

v2.4.0.6
Derivative Financial Instruments (Narrative) (Details) (USD $)
In Thousands, unless otherwise specified
3 Months Ended
Mar. 31, 2013
Mar. 31, 2012
Dec. 31, 2012
Derivative Financial Instruments [Abstract]      
Maximum net exposure to company $ 1,209    
Cash flow hedge gain (loss) reclassified to revenue 171 1  
Accumulated derivative instrument gain (loss) 612   (169)
Adjustment to accumulated other comprehensive income $ 781 $ (538)