Debt - Summary of Company's Total Outstanding Borrowings (Parenthetical) (Detail) $ in Millions	3 Months Ended	6 Months Ended
Jun. 30, 2019 USD ($)	Jun. 30, 2019 USD ($)
Debt Instrument [Line Items]
Line of credit facility, available borrowing capacity	$ 55.0	$ 55.0
Weighted average interest rate	4.81%	5.04%
Term Loans [Member]
Debt Instrument [Line Items]
Debt instrument interest rate	4.6875%	4.6875%
Term Loans [Member] \| LIBOR [Member]
Debt Instrument [Line Items]
Debt instrument interest rate	2.4375%	2.4375%
Term Loans [Member] \| Base Rate [Member]
Debt Instrument [Line Items]
Debt instrument interest rate	2.25%	2.25%
Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Debt instrument interest rate	4.6875%	4.6875%
Revolving Credit Facility [Member] \| LIBOR [Member]
Debt Instrument [Line Items]
Debt instrument interest rate	2.4375%	2.4375%
Revolving Credit Facility [Member] \| Base Rate [Member]
Debt Instrument [Line Items]
Debt instrument interest rate	2.25%	2.25%

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

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-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

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.

+ Details

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- Definition

Amount of borrowing capacity currently available under the credit facility (current borrowing capacity less the amount of borrowings outstanding).

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.19(b),22(b))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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- Definition

Weighted average interest rate of long-term debt outstanding calculated over time.

+ References

No definition available.

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