Long-Term Debt - Summary (Details) $ in Thousands			3 Months Ended	8 Months Ended
Long-Term Debt - Summary (Details) $ in Thousands	Jan. 01, 2027 Rate	May 12, 2025	Mar. 31, 2027 Rate	Dec. 31, 2025 Rate	Sep. 30, 2025 USD ($)	Dec. 31, 2024 USD ($)	Sep. 30, 2024 USD ($)	Feb. 21, 2024	Dec. 13, 2021	Aug. 26, 2020
Debt Instrument [Line Items]
Total long-term debt					$ 2,213,106	$ 1,729,346	$ 1,730,604
Line of Credit Facility, Leverage Ratio, Adjusted EBITDA		3.0
Forecast
Debt Instrument [Line Items]
Line of Credit Facility, Leverage Ratio, Adjusted EBITDA \| Rate	325.00%		350.00%	375.00%
Line of Credit
Debt Instrument [Line Items]
Total long-term debt					618,886	198,000	200,000
Secured Debt
Debt Instrument [Line Items]
Total long-term debt					60,579	0	0
Unsecured Debt
Debt Instrument [Line Items]
Total long-term debt					1,533,641	1,531,346	1,530,604
Revolving Unsecured Credit Facility due 2029 \| Line of Credit
Debt Instrument [Line Items]
Total long-term debt					575,000	198,000	200,000
Revolving Secured Credit Facility, Due 2027 \| Line of Credit
Debt Instrument [Line Items]
Total long-term debt					43,886	0	0
Revolving Unsecured Uncommitted Credit Facility due 2027 \| Line of Credit
Debt Instrument [Line Items]
Total long-term debt					0	0	0
Secured Term Loan, Due 2027 \| Secured Debt
Debt Instrument [Line Items]
Total long-term debt					26,924	0	0
Secured Term Loan, Due 2029 \| Secured Debt
Debt Instrument [Line Items]
Total long-term debt					13,462	0	0
Secured Term Loan, Due 2031 \| Secured Debt
Debt Instrument [Line Items]
Total long-term debt					$ 20,193	0	0
4.625% senior unsecured notes due 2028 \| Unsecured Debt
Debt Instrument [Line Items]
Stated interest rate (as a percent)					4.625%					4.625%
Total long-term debt					$ 496,419	495,577	495,304
Deferred finance costs, net					$ 3,600	4,400	4,700
5.625% Senior Unsecured Notes due 2030 \| Unsecured Debt
Debt Instrument [Line Items]
Stated interest rate (as a percent)					5.625%				5.625%
Total long-term debt					$ 544,905	544,130	543,879
Deferred finance costs, net					$ 5,100	5,900	6,100
6.875% Senior Unsecured Notes due 2032 \| Unsecured Debt
Debt Instrument [Line Items]
Stated interest rate (as a percent)					6.875%			6.875%
Total long-term debt					$ 492,317	491,639	491,421
Deferred finance costs, net					$ 7,700	$ 8,400	$ 8,600

FirstCash Holdings, Inc. 10-Q