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Income Taxes (Narrative) (Details) - USD ($) | 12 Months Ended |  |
--- | --- | --- | ---
Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Investments, Owned, Federal Income Tax Note [Line Items] |  |  |  |
Effective income tax rate | 42.00% | 28.00% |  |
Net deferred tax liability | $ 20,764,000 | $ 23,185,000 |  |
Valuation allowances against deferred tax assets | 32,860,000 | 17,942,000 | $ 13,282,000 | $ 7,170,000
Federal net operating loss carryforwards related to the acquisitions of Cardiogenesis and Hemosphere | 1,300,000 |  |  |
State net operating loss carryforwards | 1,500,000 |  |  |
Foreign net operating loss carryforwards | 443,000 |  |  |
Research and development tax credit carryforwards | 293,000 |  |  |
Other tax credit | 81,000 |  |  |
Excess interest carryforward | 6,438,000 | 5,559,000 |  |
Interest deduction limit | 20,400,000 | 8,100,000 |  |
Non-current liabilities recorded related to interest and penalties on uncertain tax positions | 372,000 | 358,000 |  |
Penalties and interest income (expense) | 6,500 | 145,000 | (35,000) |
Total uncertain tax liability including interest and penalties | 5,200,000 | 4,900,000 |  |
Uncertain tax liability recorded as reduction to deferred tax assets | 100,000 | 100,000 |  |
Uncertain tax liability recorded to non-current liability | 5,100,000 | 4,800,000 |  |
Approximate amount that would affect tax rate | 4,400,000 | $ 3,600,000 | $ 3,200,000 |
Approximate amount of uncertain tax liability to be recognized | 100,000 |  |  |
Foreign Authority |  |  |  |
Investments, Owned, Federal Income Tax Note [Line Items] |  |  |  |
Net deferred tax liability | $ 119,000 |  |  |

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