Debt - Additional Information (Detail) - Secured Notes [Member] - USD ($)		6 Months Ended
Oct. 14, 2016	Sep. 30, 2017
Debt Instrument [Line Items]
Debt instrument, issuance date		Oct. 14, 2016
Aggregate principal amount of notes issued	$ 84,000,000
Aggregate principal additional amount of notes to be issued	36,000,000
Payment to cash reserve account held by collateral agent	$ 5,000,000
Debt instrument, unused/additional borrowing capacity		The Company issued $84 million aggregate principal amount of the Secured Notes on October 14, 2016 and, so long as no event of default has occurred, the Company will issue an additional $36 million aggregate principal amount of the Secured Notes upon public announcement of field trial results for the MosaiQ IH Microarray that demonstrates greater than 99% concordance for the detection of blood group antigens and greater than 95% concordance for the detection of blood group antibodies when compared to predicate technologies for a pre-defined set of blood group antigens and antibodies.
Debt instrument date of first required payment, interest	Apr. 15, 2017
Debt instrument date of first required payment, principal	Apr. 15, 2019
Debt instrument, interest rate		12.00%
MosaiQ [Member]
Debt Instrument [Line Items]
Debt instrument subscribers right to receive payment as percentage of net MosaiQ sales	2.00%
Maximum [Member]
Debt Instrument [Line Items]
Aggregate principal amount of notes issued	$ 120,000,000

Face (par) amount of additional debt instrument at time of issuance.

No definition available.

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- Definition

Date the debt agreement requires the first payment, interest to be made, in CCYY-MM-DD format.

+ References

No definition available.

+ Details

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- Definition

Date the debt agreement requires the first payment, principal to be made, in CCYY-MM-DD format.

+ References

No definition available.

+ Details

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- Definition

Debt instrument subscribers right to receive payment as percentage of net sales.

+ References

No definition available.

+ Details

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- Definition

Face (par) amount of debt instrument at time of issuance.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 55
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=64930739&loc=d3e28878-108400

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=64930785&loc=d3e28551-108399

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- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.22(a)(1))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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- Definition

Date the debt instrument was issued, in CCYY-MM-DD format.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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- Definition

Description of unused borrowing capacity under the debt instrument and conditions under which the commitment can be withdrawn by the lender.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
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- Definition

The designation of funds furnished by a borrower to a lender to assure future payments of the borrower's real estate taxes and insurance obligations with respect to a mortgaged property. Escrow deposits may be made for a variety of other purposes such as earnest money and contingent payments. This element excludes replacement reserves which are an escrow separately provided for within the US GAAP taxonomy.

+ References

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-Name Accounting Standards Codification
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-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03.10)
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