Income Taxes (Narrative) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Income Tax Disclosure [Abstract]
Deferred tax liabilities, net	$ 19,115	$ 20,764
Valuation allowances against deferred tax assets	32,607	32,860	$ 17,942	$ 13,282
Federal net operating loss carryforwards related to the acquisitions of Cardiogenesis and Hemosphere	4,600
State net operating loss carryforwards	17,500
Foreign net operating loss carryforwards	7,000
Research and development tax credit carryforwards	300
Excess interest carryforward	9,203	6,438
Interest deduction limit	18,500	20,400
Non-current liabilities recorded related to interest and penalties on uncertain tax positions	600	400
Penalties and interest income (expense)	(100)	(100)	100
Total uncertain tax liability including interest and penalties	5,100	5,200
Uncertain tax liability recorded as reduction to deferred tax assets	500	100
Uncertain tax liability recorded to non-current liability	4,600	5,100
Approximate amount that would affect tax rate	4,000	$ 4,400	$ 3,600
Approximate amount of uncertain tax liability to be recognized	$ 200