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Stock Based Compensation Schedule of Employee Stock Ownership Plans (ESOP) Disclosure (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Employee Stock Ownership Plan (ESOP), Shares in ESOP [Abstract]      
ESOP Compensation Expense $ 1,400 $ 1,400 $ 1,200
Allocated Shares, in shares 758,101    
Shares Released for Allocation During 2017, in shares 4,931    
Unallocated Shares, in shares 5,001    
Total ESOP Shares, in shares 768,033    
Market Value of Unallocated ESOP Shares $ 160