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Consolidated Statements of Comprehensive Income (Loss) (Parenthetical) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Statement of Comprehensive Income [Abstract]      
Unrealized gain (loss) on available for sale securities, tax $ 390 $ 3,506 $ 5,153
Reclassification adjustment for realized gains on available for sale securities called or sold, tax 3 34 88
Gain (loss) from unfunded post-retirement benefit obligation, tax $ 372 $ 217 $ 369