Business Segment and Geographic Information - Revenues by Product (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024
Disaggregation of Revenue [Line Items]
Total Sales	$ 240,678	$ 221,910	$ 475,100	$ 413,584
Pump
Disaggregation of Revenue [Line Items]
Total Sales	111,871	107,875	213,962	195,162
Supplies and other
Disaggregation of Revenue [Line Items]
Total Sales	128,807	113,881	261,138	219,414
Net revenue recognized (deferred) for Tandem Choice program
Disaggregation of Revenue [Line Items]
Total Sales	$ 0	$ 154	$ 0	$ (992)

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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+ Details

- Definition

Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise.

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+ Details