Equity Compensation, Employment Agreements and other Benefit Plans - Narrative (Details)	3 Months Ended		12 Months Ended
	Mar. 31, 2024 USD ($) installment shares	Mar. 31, 2023 USD ($) shares	Dec. 31, 2023 shares	Jun. 14, 2023 shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock, shares authorized (in shares) | shares	500,000,000		500,000,000	20,000,000
Shares available for future grants (in shares) | shares	18,000,000
Stock-based compensation expense | $	$ 3,000,000	$ 3,000,000
401(k) Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Maximum employee contribution to plan if under the age of 50 | $	22,500
Maximum catch-up contribution if over the age of 50 | $	7,500
Expense related to qualified plan | $	$ 150,000	$ 133,000
Maximum | 401(k) Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Employer matching contribution, percent of match	100.00%
Employer matching contribution, percent of employees' gross pay	6.00%
Stock Award Deferral Program
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of installments | installment	5
Deferred Stock Units | 2007 Equity Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Awards reserved for future issuance (in shares) | shares	1,000,000		1,000,000
Dividend Equivalent Rights | 2007 Equity Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Awards reserved for future issuance (in shares) | shares	1,000,000		1,000,000
Restricted Stock Units (RSUs)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Performance period	3 years	3 years
Granted shares (in shares) | shares	537,000	649,000
Grant date fair value | $	$ 3,000,000	$ 4,000,000
Restricted Stock Units (RSUs) | 2007 Equity Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period	3 years	3 years
Performance Share Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Performance period	3 years		3 years
Granted shares (in shares) | shares	537,000	605,000
Grant date fair value | $	$ 3,000,000	$ 3,000,000
Performance Share Units | Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting percentage	0.00%	0.00%
Performance Share Units | Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting percentage	200.00%	200.00%
First Anniversary | Restricted Stock Units (RSUs)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting percentage	33.33%
First Anniversary | Performance Share Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting percentage	33.33%
Second Anniversary | Restricted Stock Units (RSUs)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting percentage	33.33%
Second Anniversary | Performance Share Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting percentage	33.33%
Third Anniversary | Restricted Stock Units (RSUs)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting percentage	33.33%
Third Anniversary | Performance Share Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting percentage	33.33%