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Subsequent Event - Additional Information (Detail) - USD ($) $ in Millions		3 Months Ended	12 Months Ended	21 Months Ended
	May 07, 2018	Mar. 31, 2018	May 07, 2020	May 07, 2020
Paragon Medical Inc [Member]
Subsequent Event [Line Items]
Date of acquisition		May 07, 2018
Paragon Medical Inc [Member] | Subsequent Event [Member]
Subsequent Event [Line Items]
Acquisition percentage	100.00%
Cash payment to acquire business	$ 375.0
Second Lien Credit Agreement [Member] | Sun Trust Bank [Member]
Subsequent Event [Line Items]
Second lien facility maturity date		Apr. 19, 2023
Cash proceeds of non-ordinary course asset sales or other dispositions of property required to prepay outstanding loans		100.00%
Cash proceeds from insurance and condemnation events with respect to assets required to prepay outstanding loans		100.00%
Cash proceeds from the issuance of debt obligations not permitted by credit agreement required to prepay outstanding loans		100.00%
Cash proceeds from the issuance of equity required to prepay outstanding loans		100.00%
Second Lien Credit Agreement [Member] | Sun Trust Bank [Member] | Subsequent Event [Member]
Subsequent Event [Line Items]
Borrowings	$ 200.0
London Interbank Offered Rate (LIBOR) [Member] | Second Lien Credit Agreement [Member] | Sun Trust Bank [Member]
Subsequent Event [Line Items]
Applicable margin		8.00%
London Interbank Offered Rate (LIBOR) [Member] | Minimum [Member] | Second Lien Credit Agreement [Member] | Sun Trust Bank [Member]
Subsequent Event [Line Items]
Base rate		1.00%
Base Rate [Member] | Second Lien Credit Agreement [Member] | Sun Trust Bank [Member]
Subsequent Event [Line Items]
Applicable margin		7.00%
Scenario, Forecast [Member] | Second Lien Credit Agreement [Member] | Sun Trust Bank [Member]
Subsequent Event [Line Items]
Prepayment penalty percentage			1.00%	2.00%

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Date when the acquirer obtains control of the acquiree, in CCYY-MM-DD format.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 10
-Section 25
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Date the credit facility terminates, in CCYY-MM-DD format.

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-Name Accounting Standards Codification
-Topic 210
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Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

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The cash outflow associated with the acquisition of business during the period. The cash portion only of the acquisition price.

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Detail information of subsequent event by type. User is expected to use existing line items from elsewhere in the taxonomy as the primary line items for this disclosure, which is further associated with dimension and member elements pertaining to a subsequent event.

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