Income Taxes - Summary of Federal Net Operating Loss Carryforwards and Related Deferred Income Tax Assets (Details) - USD ($) $ in Millions	Dec. 31, 2020	Dec. 31, 2019
Income Tax Contingency [Line Items]
Deferred Tax Asset	$ 1.1	$ 3.3
Internal Revenue Service (IRS)
Income Tax Contingency [Line Items]
NOL Carry-forwards	5.2
Deferred Tax Asset	1.1
Internal Revenue Service (IRS) | 2027
Income Tax Contingency [Line Items]
NOL Carry-forwards	0.8
Deferred Tax Asset	0.2
Internal Revenue Service (IRS) | 2028
Income Tax Contingency [Line Items]
NOL Carry-forwards	4.4
Deferred Tax Asset	$ 0.9