Derivative Financial Instruments and Hedging Activities - Schedule of Statements of Operations Related to Derivative Financial Instruments (Details) (USD $)
In Thousands, unless otherwise specified |
3 Months Ended | 6 Months Ended | ||
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Jun. 30, 2014
|
Jun. 30, 2013
|
Jun. 30, 2014
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Jun. 30, 2013
|
|
Derivative Instruments and Hedging Activities Disclosure [Abstract] | ||||
Losses on economic hedges | $ (227) | $ 2,742 | $ (368) | $ (2,429) |
Ineffectiveness of cash flow hedges | 0 | 0 | 0 | (657) |
Write-off of losses in AOCL for a discontinued hedge relationship | (392) | (1,654) | (1,171) | (1,654) |
Loss on derivatives | $ (619) | $ 1,088 | $ (1,539) | $ (4,740) |