Annual report pursuant to Section 13 and 15(d)

Income Taxes (Narrative) (Details)

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Income Taxes (Narrative) (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Valuation Allowance [Line Items]      
Provisional decrease in deferred tax asset and liabilities     $ 3,400
Reduction of goodwill   $ 541  
Increase in valuation allowance due to TCJA $ 1,000    
Penalties and interest accrued 284 $ 227 $ 181
Federal      
Valuation Allowance [Line Items]      
Net operating loss carryforwards 29,265    
State and Local | New York      
Valuation Allowance [Line Items]      
Net operating loss carryforwards 4,700    
State and Local | New York City      
Valuation Allowance [Line Items]      
Net operating loss carryforwards $ 5,231