Commitment and Contingencies - Additional Information (Details) - USD ($)		9 Months Ended
	Nov. 06, 2019	Sep. 30, 2019
Commitments And Contingencies [Line Items]
Business setup, costs incurred		$ 118,000
Anticipated proceeds from offering		125,000,000
Subsequent Event [Member] | LGL Systems Acquisition Holdings Company, LLC [Member] | Private Placement [Member]
Commitments And Contingencies [Line Items]
Contributed to subsidiary	$ 3,350,000
Prepaid Offering Costs [Member]
Commitments And Contingencies [Line Items]
Business setup, costs incurred		116,000
Maximum [Member]
Commitments And Contingencies [Line Items]
Business setup, commitment amount		150,000
Contingent liability, funding amount		$ 4,250,000