v3.8.0.1
Income Taxes - Additional Information (Details) - USD ($)
 12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Income Tax Contingency [Line Items]        
Tax cuts and jobs act of 2017 income tax expense (benefit)   $ 5,400    
Federal statutory income tax rate   35.00% 35.00% 35.00%
Operating Loss Carryforwards   $ 8,200,000    
Desert Commercial Bank        
Income Tax Contingency [Line Items]        
Operating Loss Carryforwards   $ 13,400,000    
Operating Loss Carryforwards Utilization Period   20 years    
Operating Loss Carryforwards, Expiration Date, Year   2032    
Operating Loss Carryforwards, Limitations on Use   operating loss carryforwards are subject to limitation under Section 382 of the Internal Revenue Service Code and expire in 2032    
Pacific Rim Bank        
Income Tax Contingency [Line Items]        
Operating Loss Carryforwards   $ 3,900,000    
Operating Loss Carryforwards, Expiration Date, Year   2035    
Community 1st Bancorp        
Income Tax Contingency [Line Items]        
Operating Loss Carryforwards   $ 2,400,000    
Operating Loss Carryforwards, Expiration Date, Year   2037    
Desert Commercial Bank, Pacific Rim Bank and Community First Bancorp        
Income Tax Contingency [Line Items]        
Operating Loss Carryforwards   $ 11,200,000    
Scenario Forecast        
Income Tax Contingency [Line Items]        
Federal statutory income tax rate 21.00%