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Fair Value (Details 3) - Collateralized Debt Obligations [Member] - Fair Value, Measurements, Recurring [Member] - Fair Value, Inputs, Level 3 [Member] - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2016 | Dec. 31, 2015
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Beginning balance | $ 2,734 | $ 2,432
Included in earnings | 0 | 0
Total unrealized gains, included in other comprehensive income | (418) | 302
Transfers in and/or (out) of Level 3 | 0 | 0
Ending balance | $ 2,316 | $ 2,734

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