Notes Payable - Narrative (Details) - USD ($)								9 Months Ended
	Feb. 18, 2020	Dec. 18, 2019	Nov. 13, 2019	Dec. 21, 2018	Nov. 07, 2018	Nov. 17, 2017	Jan. 29, 2016	Sep. 30, 2020	Sep. 30, 2019	Dec. 31, 2019	Jun. 13, 2018
Line of Credit Facility [Line Items]
Repayment of debt								$ 94,300,000	$ 213,500,000
Long-term debt								70,300,000		$ 127,100,000
99 Restaurants Credit Facility | Revolver Note
Line of Credit Facility [Line Items]
Long-term debt								$ 12,500,000		3,000,000.0
99 Restaurants Credit Facility | 99 Restaurants | Revolver Note
Line of Credit Facility [Line Items]
Aggregate borrowing capacity				$ 15,000,000.0
Interest rate								5.75%
Amount available to be drawn								$ 12,500,000
99 Restaurants Credit Facility | 99 Restaurants | Revolver Note | Base Rate
Line of Credit Facility [Line Items]
Interest rate basis				2.50%
99 Restaurants Credit Facility | 99 Restaurants | Revolver Note | LIBOR
Line of Credit Facility [Line Items]
Interest rate basis				3.50%
99 Term Loan | Notes payable to banks
Line of Credit Facility [Line Items]
Interest rate								3.75%
Long-term debt								$ 18,600,000		30,900,000
99 Term Loan | 99 Restaurants
Line of Credit Facility [Line Items]
Notes, face amounts				$ 37,000,000.0
99 DLOC Loan
Line of Credit Facility [Line Items]
Long-term debt								0		0
99 DLOC Loan | 99 Restaurants | Line of Credit Loan
Line of Credit Facility [Line Items]
Notes, face amounts				$ 10,000,000.0
Margin Loan Agreement | Revolver Note
Line of Credit Facility [Line Items]
Aggregate borrowing capacity					$ 300,000,000.0
Shares pledged as collateral (in shares)					25,000,000.0
Shares pledged as collateral, shares released (in shares)		200,000	5,000,000
Repayment of debt	$ 75,000,000.0
Long-term debt								0		75,000,000.0
Brasada Credit Agreement | Notes payable to banks
Line of Credit Facility [Line Items]
Long-term debt								$ 13,100,000		13,400,000
Brasada Credit Agreement | NV Brasada
Line of Credit Facility [Line Items]
Aggregate borrowing capacity							$ 17,000,000.0
Brasada Credit Agreement | NV Brasada | Notes payable to banks
Line of Credit Facility [Line Items]
Variable rate interest								2.41%
Brasada Credit Agreement | NV Brasada | Acquisition Loan
Line of Credit Facility [Line Items]
Notes, face amounts							12,500,000
Brasada Credit Agreement | NV Brasada | Development Loan
Line of Credit Facility [Line Items]
Notes, face amounts							3,000,000.0
Brasada Credit Agreement | NV Brasada | Acquisition Loan, A Note
Line of Credit Facility [Line Items]
Notes, face amounts							$ 6,300,000
Interest rate							4.51%
Brasada Credit Agreement | NV Brasada | Acquisition Loan, B Note
Line of Credit Facility [Line Items]
Notes, face amounts							$ 6,300,000
Brasada Credit Agreement | NV Brasada | Acquisition Loan, B Note | LIBOR
Line of Credit Facility [Line Items]
Interest rate basis							225.00%
Brasada Credit Agreement | NV Brasada | Line of Credit Loan
Line of Credit Facility [Line Items]
Aggregate borrowing capacity							$ 1,500,000
Amount available to be drawn								$ 800,000
Long-term debt											$ 3,600,000
FNF Revolver | Revolver Note
Line of Credit Facility [Line Items]
Aggregate borrowing capacity						$ 100,000,000.0
Amount available to be drawn								100,000,000.0
Long-term debt								$ 0		$ 0
Maximum borrowing increment						$ 1,000,000.0
Debt instrument, term						5 years
Debt instrument, term of automatic extension						5 years
FNF Revolver | Revolver Note | LIBOR
Line of Credit Facility [Line Items]
Interest rate basis						450.00%