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Derivative Instruments and Hedging Activities (Details 3) (USD $) In Thousands, unless otherwise specified | Dec. 31, 2013 | Dec. 31, 2012
--- | --- | ---
Derivative Assets |  |
Gross amounts of recognized assets | $ 13,792 | $ 54,454
Gross amounts offset in the statement of financial position | (10,773) | (3,630)
Net amounts of assets presented in the statement of financial position | 3,019 | 50,824
Gross amounts financial instrument not offset in the statement of financial position | 373 | 1,892
Net amount | 3,392 | 52,716
Derivative Liabilities |  |
Gross amounts of recognized liabilities | 24,685 | 3,822
Gross amounts offset in the statement of financial position | (10,773) | (3,630)
Net amounts of liabilities presented in the statement of financial position | 13,912 | 192
Net amount | $ 13,912 | $ 192

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