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Pending Acquisition (Details)
$ / shares in Units, $ in Thousands
Apr. 28, 2016
USD ($)
$ / shares
Jun. 30, 2016
USD ($)
Dec. 31, 2015
USD ($)
Business Acquisition [Line Items]      
Total assets | $   $ 1,290,809 $ 1,276,736
Sierra Vista Bank [Member]      
Business Acquisition [Line Items]      
Transaction value | $ $ 24,000    
Transaction value per share (in dollars per share) | $ / shares $ 5.20    
Merger consideration election, cash (percent) 100.00%    
Merger consideration election, stock (percent) 100.00%    
Share price (in dollars per share) | $ / shares $ 12.00    
Breakdown of merger, stock (percent) 58.00%    
Breakdown of merger, cash (percent) 42.00%    
Cash paid per share (in dollars per share) | $ / shares $ 2.18    
Conversion ratio of stock issued 0.2513    
Sierra Vista Bank [Member]      
Business Acquisition [Line Items]      
Total assets | $ $ 155,000