Annual report pursuant to Section 13 and 15(d)

Income Taxes - Narrative (Details)

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Income Taxes - Narrative (Details) - USD ($)
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Income Tax Disclosures [Line Items]      
Income tax payments $ 1,200,000 $ 2,400,000 $ 2,600,000
Net operating loss carryforwards 700,000    
Tax Credit Carryforward, Limitations on Use 3,500,000    
Continuing Operations      
Income Tax Disclosures [Line Items]      
Decrease in valuation allowance during the period 66,744    
State Jurisdiction      
Income Tax Disclosures [Line Items]      
Net operating loss carryforwards 43,600,000 46,500,000  
Portion of NOL subject to valuation allowance 40,300,000    
Valuation allowance for net operating loss carryforwards 1,700,000 1,700,000  
Valuation Allowance, Other Deferred Tax Assets      
Income Tax Disclosures [Line Items]      
Valuation allowance for net operating loss carryforwards $ 47,504 $ 76,747