Equity Compensation Plans - Unrecognized Compensation Cost (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2022 USD ($)
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized [Roll Forward]
Unrecognized compensation cost at beginning of period	$ 42,383
Equity grants	26,459
Performance-based valuation adjustment	(3,205)
Equity grant forfeitures	(5,365)
Equity compensation expense	(20,084)
Unrecognized Compensation Cost at End of Period	40,188
Restricted Stock Units
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized [Roll Forward]
Unrecognized Compensation Cost at End of Period	5,000
Deferred Stock Units
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized [Roll Forward]
Unrecognized Compensation Cost at End of Period	20,000
Performance Stock Units
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized [Roll Forward]
Unrecognized Compensation Cost at End of Period	15,000
Redwood Incentive Plan | Restricted Stock Awards
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized [Roll Forward]
Unrecognized compensation cost at beginning of period	84
Equity grants	0
Performance-based valuation adjustment	0
Equity grant forfeitures	(5)
Equity compensation expense	(79)
Unrecognized Compensation Cost at End of Period	0
Redwood Incentive Plan | Restricted Stock Units
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized [Roll Forward]
Unrecognized compensation cost at beginning of period	3,589
Equity grants	4,688
Performance-based valuation adjustment	0
Equity grant forfeitures	(548)
Equity compensation expense	(2,661)
Unrecognized Compensation Cost at End of Period	5,068
Redwood Incentive Plan | Deferred Stock Units
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized [Roll Forward]
Unrecognized compensation cost at beginning of period	26,473
Equity grants	11,672
Performance-based valuation adjustment	0
Equity grant forfeitures	(4,812)
Equity compensation expense	(13,484)
Unrecognized Compensation Cost at End of Period	19,849
Redwood Incentive Plan | Performance Stock Units
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized [Roll Forward]
Unrecognized compensation cost at beginning of period	12,237
Equity grants	9,875
Performance-based valuation adjustment	(3,205)
Equity grant forfeitures	0
Equity compensation expense	(3,636)
Unrecognized Compensation Cost at End of Period	15,271
Employee Stock Purchase Plan
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized [Roll Forward]
Unrecognized compensation cost at beginning of period	0
Equity grants	224
Performance-based valuation adjustment	0
Equity grant forfeitures	0
Equity compensation expense	(224)
Unrecognized Compensation Cost at End of Period	$ 0