Income Taxes - Additinal information (Details) - USD ($)	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Operating Loss Carryforwards [Line Items]
State net operating loss carryforwards, state tax credit carryforwards and other state net deferred tax assets valuation allowance	$ 147,000	$ 236,000
Valuation allowance	147,000	236,000
Uncertain tax positions or unrecognized tax benefits	0	0
Domestic Tax Authority | Pennsylvania
Operating Loss Carryforwards [Line Items]
Valuation allowance	1,620,000
Domestic Tax Authority | New York
Operating Loss Carryforwards [Line Items]
Tax credit carryforward	$ 147,000	$ 139,000
Tax credit carryforward expiration date in years	2023