Debt - Narrative (Details)				1 Months Ended	3 Months Ended			6 Months Ended
	Apr. 08, 2021 USD ($) Rate	Feb. 10, 2020 USD ($) $ / shares shares	Apr. 15, 2019 USD ($)	Dec. 31, 2020 USD ($)	Jun. 30, 2021 USD ($)	Jun. 30, 2020 USD ($)	Mar. 31, 2020 USD ($)	Jun. 30, 2021 USD ($)	Jun. 30, 2020 USD ($)	Dec. 31, 2019
Debt Instrument [Line Items]
Treasury stock reissued (in shares) | shares		722,423
Shares issued price per share (in dollars per share) | $ / shares		$ 32.43
Treasury stock acquired average cost per share (in dollars per share) | $ / shares		$ 3.37
Loss on extinguishment of debt					$ 0	$ 0		$ 0	$ (8,123,000)
Liability, debt					314,793,000			314,793,000
Current portion of long-term debt				$ 666,000	685,000			685,000
Convertible Senior Notes due 2024
Debt Instrument [Line Items]
Implied estimated effective rate			10.20%
Subordinated Promissory Note
Debt Instrument [Line Items]
Liability, debt					1,000,000.0			1,000,000.0
Current portion of long-term debt					700,000			700,000
Subordinated Promissory Note | Restaurant Magic
Debt Instrument [Line Items]
Stated interest rate										5.75%
Warranty liability assumed				2,000,000.0
Monthly principal and interest payments				$ 60,600
Convertible Notes
Debt Instrument [Line Items]
Debt issued			$ 80,000,000.0
Convertible Notes | Convertible Senior Notes due 2024
Debt Instrument [Line Items]
Debt issued					13,750,000			13,750,000
Stated interest rate			4.50%
Debt instrument, repurchased face amount		$ 66,300,000
Debt settlement amount		59,000,000.0
Settlement of equity component		30,800,000
Debt instrument pay off accrued interest		1,000,000.0
Loss on extinguishment of debt		8,100,000
Conversion ratio			0.0350217
Liability, debt			$ 62,400,000
Equity component of notes			$ 17,600,000
Issuance costs					4,900,000			4,900,000
Issuance costs, debt component					3,800,000			3,800,000
Issuance cost, equity component					1,100,000			1,100,000
Income tax benefit, equity transaction							$ (1,800,000)
Convertible Notes | Convertible Senior Notes Due 2026
Debt Instrument [Line Items]
Debt issued		$ 120,000,000.0			120,000,000			120,000,000
Stated interest rate		2.875%
Implied estimated effective rate		7.30%
Conversion ratio		0.0232722
Liability, debt		$ 93,800,000
Equity component of notes		$ 26,200,000
Issuance costs					4,200,000			4,200,000
Issuance costs, debt component					3,300,000			3,300,000
Issuance cost, equity component					900,000		900,000	900,000
Income tax benefit, equity transaction							$ (6,200,000)		$ (4,400,000)
Credit Facility | Owl Rock Credit Agreement
Debt Instrument [Line Items]
Debt issued	$ 180,000,000.0				$ 180,000,000			$ 180,000,000
Issuance costs	$ 9,300,000
Issuance discount rate	2.00%
Proceeds from issuance of debt	$ 170,700,000
Additional borrowing capacity	$ 25,000,000.0
Debt instrument covenant maximum revenue leverage ratio	2.10
Covenant, required liquidity	$ 20,000,000.0
Credit Facility | Owl Rock Credit Agreement | Debt Instrument, Redemption, Period One
Debt Instrument [Line Items]
Debt instrument covenant maximum revenue leverage ratio | Rate	260.00%
Line of credit facility, prepayment premium, percentage	2.00%
Credit Facility | Owl Rock Credit Agreement | Debt Instrument, Redemption, Period Two
Debt Instrument [Line Items]
Debt instrument covenant maximum revenue leverage ratio | Rate	130.00%
Line of credit facility, prepayment premium, percentage	1.00%
Credit Facility | Owl Rock Credit Agreement | Base rate
Debt Instrument [Line Items]
Variable rate	3.75%
Credit Facility | Owl Rock Credit Agreement | Eurodollar
Debt Instrument [Line Items]
Variable rate	4.75%