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Accumulated Other Comprehensive Income (Details) - USD ($)
$ in Thousands
9 Months Ended
Sep. 30, 2016
Sep. 30, 2015
Changes in balances of each component of accumulated other comprehensive income, net of taxes [Roll Forward]    
Beginning Balance $ 102,492 $ 104,195
Net current period other comprehensive income (loss) 5,943 (4,472)
Ending Balance 108,951 103,212
AOCI Attributable to Parent [Member]    
Changes in balances of each component of accumulated other comprehensive income, net of taxes [Roll Forward]    
Beginning Balance 4,584 9,279
Net current period other comprehensive income (loss) 5,943 (4,472)
Ending Balance 10,527 $ 4,807
Unrealized Gains on Available-for-Sale Securities [Member]    
Changes in balances of each component of accumulated other comprehensive income, net of taxes [Roll Forward]    
Beginning Balance 4,584  
Other comprehensive income before reclassifications 6,860  
Amounts reclassified from accumulated other comprehensive income (917)  
Net current period other comprehensive income (loss) 5,943  
Ending Balance $ 10,527