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Summary of Significant Accounting Policies - Summary of significant percentage of total sales (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Supplier A [Member] | Supplier Concentration Risk [Member]
Concentration Risk [Line Items]
Accounts Payable	$ 2,983	$ 3,586
Supplier A [Member] | Supplier Concentration Risk [Member] | Revenue Benchmark [Member] | Bio Ventus LLC
Concentration Risk [Line Items]
Concentration Risk, Percentage	26.00%	20.00%	12.00%
Supplier B [Member] | Supplier Concentration Risk [Member]
Concentration Risk [Line Items]
Accounts Payable	$ 471	$ 697
Supplier B [Member] | Supplier Concentration Risk [Member] | Revenue Benchmark [Member] | Bio Ventus LLC
Concentration Risk [Line Items]
Concentration Risk, Percentage	17.00%	19.00%	17.00%
Supplier C [Member] | Supplier Concentration Risk [Member]
Concentration Risk [Line Items]
Accounts Payable	$ 1,000	$ 360
Supplier C [Member] | Supplier Concentration Risk [Member] | Revenue Benchmark [Member] | Bio Ventus LLC
Concentration Risk [Line Items]
Concentration Risk, Percentage	10.00%	15.00%	20.00%
Product A [Member] | Product Concentration Risk [Member] | Revenue Benchmark [Member] | Bio Ventus LLC
Concentration Risk [Line Items]
Concentration Risk, Percentage	27.00%	30.00%	38.00%
Product B [Member] | Product Concentration Risk [Member] | Revenue Benchmark [Member] | Bio Ventus LLC
Concentration Risk [Line Items]
Concentration Risk, Percentage	26.00%	20.00%	12.00%
Product C [Member] | Product Concentration Risk [Member] | Revenue Benchmark [Member] | Bio Ventus LLC
Concentration Risk [Line Items]
Concentration Risk, Percentage	17.00%	19.00%	17.00%
Product D [Member] | Product Concentration Risk [Member] | Revenue Benchmark [Member] | Bio Ventus LLC
Concentration Risk [Line Items]
Concentration Risk, Percentage	10.00%	15.00%	20.00%

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Carrying value as of the balance sheet date of liabilities incurred (and for which invoices have typically been received) and payable to vendors for goods and services received that are used in an entity's business.

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