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 6 Months Ended
Jun. 30, 2012
Jun. 30, 2011
Jun. 30, 2012
Jun. 30, 2011
Dec. 31, 2011
Derivative Financial Instruments [Abstract]          
Maximum net exposure to counterparty     $ 644    
Cash flow hedge gain (loss) reclassified to revenue 120 (65) 121 (275)  
Accumulated derivative instrument gain (loss) 347   347   506
Adjustment to accumulated other comprehensive income $ 379 $ (282) $ (159) $ (435)