Organization and Summary of Significant Accounting Policies - Narrative (Details)	12 Months Ended
	Dec. 31, 2023 USD ($) segment reporting_unit	Dec. 31, 2022 USD ($)	Dec. 31, 2021 USD ($)
Accounting Policies [Line Items]
Number of operating segments | segment	1
Number of reporting segments | segment	1
Revenue from contract with customer, maximum contract term	10 years
Revenue, remaining performance obligation, amount	$ 353,900,000
Fees to GPOs	$ 11,200,000	$ 17,600,000	$ 17,500,000
Amortization period for capitalized contract costs	10 years
Initial term and renewal service periods	10 years
Contract cost expense	$ 23,300,000	30,600,000	25,800,000
Impairment loss related to capitalized prepaid commissions	0
Non-recourse accounts receivable transferred	5,700,000	45,300,000	46,700,000
Accounts receivable due from third-party leasing companies for transferred non-recourse accounts receivable	1,100,000	6,700,000
Cash and cash equivalents	467,972,000	330,362,000	349,051,000
Cash equivalents	451,000,000	301,000,000
Minimum required purchase obligation	93,900,000
Selling, general, and administrative	$ 434,593,000	486,341,000	$ 389,430,000
Estimated useful life of software-related products	5 years
Number of reporting units | reporting_unit	1
Accumulated impairment loss on goodwill	$ 0
Accounting Standards Update [Extensible List]			Accounting Standards Update 2020-06 [Member]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2024-01-01
Accounting Policies [Line Items]
Revenue, remaining performance obligation, expected timing of satisfaction, period	10 years
Other Assets
Accounting Policies [Line Items]
Software development costs capitalized	$ 14,600,000	13,200,000
Internal Use Software and Software Development Costs | Property and Equipment
Accounting Policies [Line Items]
Software development costs capitalized	$ 32,200,000	33,000,000
Estimated useful life of software-related products	5 years
Shipping Costs
Accounting Policies [Line Items]
Selling, general, and administrative	$ 18,600,000	24,500,000	$ 18,200,000
Primary Supplier
Accounting Policies [Line Items]
Minimum required purchase obligation	$ 0
Period for notice of termination	6 months
Purchases from suppliers	$ 65,800,000	$ 105,700,000	$ 103,200,000
Minimum
Accounting Policies [Line Items]
Original terms of contracts	1 year
Term of sales-type leases	1 year
Maximum
Accounting Policies [Line Items]
Original terms of contracts	5 years
Term of sales-type leases	10 years
Customer Concentration Risk | Revenues | Ten Largest GPOs
Accounting Policies [Line Items]
Concentration risk percentage	64.00%