Fair Value Measurements - Additional Information (Details) - USD ($)	3 Months Ended	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2019	Dec. 31, 2018
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value, assets, Level 1 to Level 2 transfers, amount	$ 0	$ 0
Fair value, assets, Level 2 to Level 1 transfers, amount	0	0
Fair value, assets, transfers into (out of) Level 3, amount		0
Fair value, liabilities, Level 1 to Level 2 transfers, amount	0	0
Fair value, liabilities, Level 2 to Level 1 transfers, amount	0	0
Fair value, liabilities, transfers into (out of) Level 3, amount		$ 0
Recurring Fair Value Measurements [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value, recurring basis, unobservable input reconciliation, net derivative asset (liability), gain (loss), statement of income [Extensible List]		us-gaap:OtherNonoperatingIncomeExpenseMember
Recurring Fair Value Measurements [Member] | Estimated Fair Value [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Debt obligations	16,900,000	$ 16,900,000
Recurring Fair Value Measurements [Member] | Carrying Amount [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Debt obligations	16,300,000	16,300,000
Long tern debt remaining obligations	39,200,000	$ 39,200,000	$ 17,900,000
Fair Value, Nonrecurring
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Long-lived asset impairment charges	$ 3,500,000		$ 200,000