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Summary of Significant Accounting Policies - Disclosures of Cash Flow Information and Non-cash Transactions (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Accounting Policies [Abstract]    
Interest $ 6,533 $ 4,307
Income taxes 131 134
Non-cash transactions:    
Assets acquired in settlement of loans 1,340 1,068
Reissuance of treasury stock as compensation $ 42  
Assets acquired in business acquisition   164,690
Liabilities assumed in business acquisition   $ 150,812