Income Taxes (Details) - USD ($)	9 Months Ended	12 Months Ended
	Sep. 30, 2020	Dec. 31, 2020	Dec. 31, 2019
Income Tax Contingency [Line Items]
Deferred income tax assets, net	$ 48,308,000		$ 48,983,000
Valuation allowance	0		$ 0
Decrease in deferred tax assets	700,000
CARES Act
Income Tax Contingency [Line Items]
Deferred payroll taxes, CARES Act	1,200,000
Tax credits	1,200,000
Alternative minimum tax credits received	$ 1,300,000
CARES Act | Minimum | Forecast
Income Tax Contingency [Line Items]
Deferred payroll taxes		$ 1,500,000
Tax credits		1,200,000
CARES Act | Maximum | Forecast
Income Tax Contingency [Line Items]
Deferred payroll taxes		2,500,000
Tax credits		$ 1,500,000