SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Narrative (Details)	12 Months Ended
	Dec. 31, 2023 USD ($) store segment deliverable reportingUnit	Dec. 31, 2022 USD ($) store	Dec. 31, 2021 USD ($) store
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Number of operating segments | segment	2
Number of reporting units | reportingUnit	2
Number of reportable segments | segment	1
Initial contract term	1 year
Number of deliverables | deliverable	2
Cash	$ 103,800,000
Goodwill impairment loss	0
Impairment of intangible assets	0
Customer services	$ 3,073,278,000	$ 2,695,823,000	$ 2,424,300,000
Performance Share Units
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Award vesting period	3 years
Other countries
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Percent of total revenues	7.00%	7.00%	8.00%
Cash	$ 52,141,000	$ 68,580,000
Cash held in FDIC	$ 51,700,000
Number of stores | store	86	89	103
Customer services	$ 219,957,000	$ 197,460,000	$ 184,074,000
United States
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Number of stores | store	138	137	135
Customer services	$ 2,853,321,000	$ 2,498,363,000	$ 2,240,226,000
Maximum | Buildings
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Asset life (in years)	40 years
Maximum | Operating equipment
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Asset life (in years)	10 years
Maximum | Furniture and fixtures
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Asset life (in years)	10 years
Maximum | Internal-use software and systems development costs
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Asset life (in years)	7 years
Minimum | Buildings
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Asset life (in years)	10 years
Minimum | Operating equipment
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Asset life (in years)	2 years
Minimum | Furniture and fixtures
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Asset life (in years)	2 years
Minimum | Internal-use software and systems development costs
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Asset life (in years)	3 years
Franchise revenues
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Customer services	$ 16,475,000	$ 15,590,000	$ 15,532,000
Franchise revenues | Maximum
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Percent of total revenues	1.00%	1.00%	1.00%