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Other Benefit Plans (Narrative) (Details)
 12 Months Ended
Aug. 31, 2018
Employee
Year
Dec. 31, 2018
USD ($)
$ / shares
shares
Dec. 31, 2017
USD ($)
$ / shares
shares
Dec. 31, 2016
USD ($)
Defined Benefit Plan Disclosure [Line Items]        
Shares purchased by participants | shares   4,296 1,345  
Average purchase price per share of shares purchased | $ / shares   $ 28.94 $ 31.136  
Director's Retirement Plan [Member]        
Defined Benefit Plan Disclosure [Line Items]        
Deferred compensation arrangement with individual, recorded liability   $ 838,000 $ 683,000  
Deferred compensation arrangement with individual, compensation expense   31,000 25,000 $ 21,000
Salary Continuation Agreement [Member]        
Defined Benefit Plan Disclosure [Line Items]        
Deferred compensation arrangement with individual, recorded liability   236,000 246,000  
Deferred compensation arrangement with individual, compensation expense   $ 17,000 17,000 17,000
Defined benefit plan, maximum coverage period   15 years    
Cash surrender value of bank owned life insurance   $ 1,352,000 1,317,000  
Split Dollar Life Insurance Arrangements [Member]        
Defined Benefit Plan Disclosure [Line Items]        
Cash surrender value of bank owned life insurance   1,387,000 1,375,000  
Deferred Compensation Arrangement with Individual, by Type of Compensation, Pension and Other Postretirement Benefits [Member]        
Defined Benefit Plan Disclosure [Line Items]        
Deferred compensation arrangement with individual, recorded liability   106,000 125,000  
Deferred compensation arrangement with individual, compensation expense   78,000 5,000 6,000
Phoenix Bancorp Incorporated [Member] | Split Dollar Life Insurance Arrangements [Member]        
Defined Benefit Plan Disclosure [Line Items]        
Cash surrender value of bank owned life insurance   4,010,000 3,924,000  
401(k) Plan [Member]        
Defined Benefit Plan Disclosure [Line Items]        
Defined contribution plan, associated expense   514,000 383,000 362,000
401(k) Plan [Member] | Scottdale and First Priority [Member]        
Defined Benefit Plan Disclosure [Line Items]        
Defined contribution plan, associated expense   0    
Defined Benefit Pension Plan [Member]        
Defined Benefit Plan Disclosure [Line Items]        
Defined contribution plan, associated expense   0 $ 0 $ 0
Accrued benefit liability   345,000    
Supplemental Executive Retirement Plan [Member]        
Defined Benefit Plan Disclosure [Line Items]        
Defined benefit plan, maximum coverage period 15 years      
Number of executive officers covered | Employee 4      
Normal retirement age | Year 70      
Vesting term One-half of the benefit vests on January 1, 2022, with an additional 10% vesting each January 1 thereafter until fully vested on January 1, 2027.      
Accrued benefit liability   $ 73,000