Common stock shares purchased.

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Common stock strike price per share.

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- Definition

Consolidated Interest Coverage Ratio

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Consolidated net leverage ratio.

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Line of credit facility additional borrowing capacity.

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Notes payable number of installments.

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Number of warrant exercised.

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Warrant expiration periods.

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Number of warrants or rights outstanding.

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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.

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Latest date the outstanding debt instruments are required to be repaid, in CCYY-MM-DD format.

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Earliest date the outstanding debt instruments are required to be repaid, in CCYY-MM-DD format.

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Period of time between issuance and maturity of debt instrument, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Amount of current borrowing capacity under the credit facility considering any current restrictions on the amount that could be borrowed (for example, borrowings may be limited by the amount of current assets), but without considering any amounts currently outstanding under the facility.

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Date the credit facility first became available, in CCYY-MM-DD format.

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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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Including the current and noncurrent portions, aggregate carrying amount of all types of notes payable, as of the balance sheet date, with initial maturities beyond one year or beyond the normal operating cycle, if longer.

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The cash inflow from issuance of rights to purchase common shares at predetermined price (usually issued together with corporate debt).

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The cash outflow during the period from the repayment of aggregate short-term and long-term debt. Excludes payment of capital lease obligations.

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Indebtedness - Additional Information (Detail) $ / shares in Units, $ in Millions		1 Months Ended	6 Months Ended
	Aug. 14, 2017 USD ($) Installment	Dec. 31, 2012 USD ($) $ / shares shares	Dec. 31, 2018 USD ($) shares	Jun. 30, 2020	Aug. 14, 2017 SGD ($)
Debt Instrument [Line Items]
Warrant expiration period		150 days
Exercise of warrants \| shares			932,000
Warrants outstanding \| shares			0
Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Credit agreement date			Dec. 09, 2016
Debt instrument term (years)			5 years
Maximum capacity borrowing amount under credit facility			$ 300,000,000
Borrowings under credit facility			110,000,000
1.50% Convertible Senior Notes Maturing on December 1, 2017 [Member] \| Convertible Senior Notes [Member]
Debt Instrument [Line Items]
Proceeds from issuance of warrants, net of issue costs		$ 25,800,000
Purchase of common stock \| shares		6,300,000
Common stock, strike price per share \| $ / shares		$ 40.04
Warrants [Member]
Debt Instrument [Line Items]
Warrants exercisable beginning		Mar. 01, 2018
Warrants exercisable ending		Oct. 02, 2018
Cash [Member] \| Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Repayment of borrowings			40,000,000
Maximum [Member] \| Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Additional borrowing capacity			$ 150,000,000
Consolidated Net Leverage Ratio			3.75
Maximum [Member] \| Step Down [Member] \| Scenario, Forecast [Member] \| Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Consolidated Net Leverage Ratio				3.50
Minimum [Member] \| Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Consolidated Interest Coverage Ratio			3.00
Decillion Solutions Pte Ltd [Member]
Debt Instrument [Line Items]
Note payable	$ 1,800,000				$ 2.5
Note payable, number of installments \| Installment	10