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Business Combinations, Goodwill and Intangible Assets (Details Textual) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Intangible Assets    
Capitalized legal expenses, net of amortization $ 11,040,000  
Amortization of intangible assets $ 1,402 $ 1,093