Summary of Significant Accounting Policies - Additional Information (Detail)	9 Months Ended		12 Months Ended
	Dec. 31, 2019 USD ($) Customer	Dec. 31, 2018 USD ($) Customer	Mar. 31, 2019 USD ($) Customer	Dec. 31, 2018 USD ($) Customer
Significant Accounting Policies [Line Items]
Restricted cash	$ 9,015,000	$ 7,510,000	$ 7,507,000	$ 7,510,000
Number of customer represent 10% or more of accounts receivable | Customer	1		1
Number of customer represent 10% or more of product sales | Customer	1	1		1
Stock-based compensation cost included in inventory	$ 0		$ 0
Impairment losses	$ 0	$ 0
Class of warrants description	As of December 31, 2019, the Company had one class of warrants to purchase ordinary shares outstanding, which comprised warrants that were issued in December 2013 and August 2015 in connection with the establishment or increase of the Company’s then existing secured term loan facility.
Secured Notes [Member]
Significant Accounting Policies [Line Items]
Senior secured notes, Interest rate	12.00%
Debt instrument one-time consent payment				$ 3,900,000
Amendment Products [Member]
Significant Accounting Policies [Line Items]
Milestone amount receivable upon fulfillment of achievement	$ 0
Customer Relationships [Member]
Significant Accounting Policies [Line Items]
Intangible assets amortization over estimated useful life	5 years
Brands Associated with Acquired Cell Lines [Member]
Significant Accounting Policies [Line Items]
Intangible assets amortization over estimated useful life	40 years
Product Licenses [Member]
Significant Accounting Policies [Line Items]
Intangible assets amortization over estimated useful life	10 years
Other Intangibles Assets [Member]
Significant Accounting Policies [Line Items]
Intangible assets amortization over estimated useful life	7 years
Plant, Machinery and Equipment [Member] | Minimum [Member]
Significant Accounting Policies [Line Items]
Plant, machinery and equipment useful life	4 years
Plant, Machinery and Equipment [Member] | Maximum [Member]
Significant Accounting Policies [Line Items]
Plant, machinery and equipment useful life	20 years
Ortho's [Member]
Significant Accounting Policies [Line Items]
Milestone revenue recognized	$ 1,050,000		$ 450,000
MosaiQ [Member] | Secured Notes [Member]
Significant Accounting Policies [Line Items]
Debt instrument subscribers rights to receive payment as percentage of net MosaiQ sales	3.40%
Credit Concentration Risk [Member] | Accounts Receivable [Member]
Significant Accounting Policies [Line Items]
Concentration risk percentage	63.00%		55.00%
Customer Concentration Risk [Member] | Sales [Member] | Product [Member]
Significant Accounting Policies [Line Items]
Concentration risk percentage	60.00%	59.00%
Security For Property Rental Obligations of Subsidiary [Member]
Significant Accounting Policies [Line Items]
Restricted cash	$ 315,000		$ 307,000
Senior Secured Notes Due 2023 [Member]
Significant Accounting Policies [Line Items]
Senior secured notes, Interest rate	12.00%
Senior Secured Notes Due 2023 [Member] | Cash Reserve Account Held by Collateral Agent [Member]
Significant Accounting Policies [Line Items]
Restricted cash	$ 8,700,000		$ 7,200,000