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Investment Securities (Detail Textuals)
$ in Thousands
12 Months Ended
Dec. 31, 2016
USD ($)
Security
Dec. 31, 2015
USD ($)
Security
Investments Debt And Equity Securities [Abstract]    
Available for sale securities, restricted $ 9,800 $ 8,000
Available for sale securities, pledged $ 167,600 $ 182,700
Number of securities consisted in portfolio | Security 298 316
Number of securities in loss position | Security 209 111
Unrealized loss included in other comprehensive $ 188,600 $ 147,500
12 months or more 3,742 45,296
Gross Unrealized Losses $ 3,400 $ 2,000