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Derivative Liabilities and Collateral Pledged (Details) - USD ($) $ in Thousands | Mar. 31, 2017 | Dec. 31, 2016
--- | --- | ---
Derivative [Line Items] |  |  |
Gross amounts of recognized liabilities |  | $ 101,347 | $ 135,897
Derivative Liabilities not subject to master netting agreements |  | 24,400 | 39,500
Derivatives, Interest Rate Contracts | Subject to Master Netting Agreements |  |  |
Derivative [Line Items] |  |  |
Gross amounts of recognized liabilities | [1] | 76,986 | 96,363
Gross amounts offset in the Statement of Condition | [1] | 0 | 0
Net amounts of liabilities presented in the Statement of Condition | [1],[2] | 76,986 | 96,363
Derivative assets available for offset | [1] | (18,674) | (25,953)
Collateral pledged | [1] | (55,378) | (60,746)
Net amount | [1] | $ 2,934 | $ 9,664
[1] | Amounts are comprised entirely of interest rate derivative contracts.
[2] | In cluded in Derivative l iabilities on the Consolidated Condensed Statements of Condition. As of March 31 , 2017 and December 31, 2016, $ 24 . 4 million and $ 39.5 million, respectively, of derivative liabilities (primarily fixed income forward contracts) have been excluded from these tables because they are generally not subject to master netting or similar agreements.

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