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Business Combinations - Tri-Valley (Details) - Tri Valley Bank
Apr. 06, 2018
USD ($)
shares
Business Combinations  
Aggregate transaction value $ 32,320,000
Shares issued in acquisition | shares 1,889,613
Issuance of 1,889,613 shares of common stock to Tri-Valley shareholders at $16.26 per share at Closing $ 30,725,000
Fixed exchange ratio of company's common stock 0.0489
Total cash paid $ 1,595,000