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Organization and Summary of Significant Accounting Policies - Narrative (Details) | 12 Months Ended
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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% |  |

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