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Basis Of Presentation And Summary Of Significant Accounting Policies (Narrative) (Details) - USD ($)	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	Jan. 01, 2021	Jan. 01, 2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Foreign currency transaction gain (loss)	$ (5,500,000)	$ 1,800,000	$ (1,200,000)
Advertising expense	1,000,000.0	1,100,000	1,700,000
Allowance for doubtful accounts	1,100,000	973,000
Write-down to inventory	4,800,000	1,700,000	601,000
Write-downs to deferred preservation costs	575,000	1,700,000	787,000
Write-down to non-conforming tissues		826,000
Impairment of long-lived assets	0	0	$ 0
Net present value of operating lease liability	48,018,000	19,797,000
Operating lease right-of-use assets, net	45,714,000	18,571,000
Long-term debt	309,123,000	291,663,000
Retained earnings	$ 1,975,000	$ 20,022,000
Minimum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Estimated useful lives	3 years
Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Estimated useful lives	10 years
ESPP Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
ESPP, percentage of market price for eligible employees	85.00%
RSAs, PSAs, RSUs, PSUs And Stock Options [Member] | Minimum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period	1 year
RSAs, PSAs, RSUs, PSUs And Stock Options [Member] | Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period	3 years
Stock Options [Member] | Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Period within grant date stock options granted typically expire	7 years
ASU 2016-09 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Net present value of operating lease liability					$ 22,700,000
Operating lease right-of-use assets, net					$ 22,700,000
Accounting Standards Update 2020-06 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Long-term debt				$ 20,400,000
Retained earnings				(3,200,000)
Additional paid-in capital				$ (16,400,000)

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