Debt default, maximum period of failure to comply with obligations, covenants or agreements.

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Debt instrument covenant terms maximum percentage of capital stock issued by wholly owned foreign restricted subsidiary.

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Line of credit facility borrowing capacity percentage.

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Management fees payable monthly percentage.

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Net leverage ratio.

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Outstanding borrowings and undrawn letters of credit threshold amount.

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Percentage points added to the reference rate to compute the variable rate on the debt instrument.

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Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

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

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

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

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The fee, expressed as a percentage of the line of credit facility, for the line of credit facility regardless of whether the facility has been used.

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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 fee, expressed as a percentage of the line of credit facility, for available but unused credit capacity under the credit facility.

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Including the current and noncurrent portions, aggregate carrying value as of the balance sheet date of loans payable (with maturities initially due after one year or beyond the operating cycle if longer).

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Debt - Additional Information (Detail)				3 Months Ended			9 Months Ended
Debt - Additional Information (Detail)	Sep. 30, 2017	Jun. 15, 2017 EUR (€)	Mar. 22, 2017 USD ($)	Dec. 31, 2019 USD ($)	Sep. 30, 2019 USD ($)	Jun. 30, 2019 USD ($)	Sep. 30, 2020 USD ($)	Sep. 30, 2020 EUR (€)	Sep. 30, 2019 USD ($)	Sep. 30, 2020 EUR (€)	Jan. 31, 2020 EUR (€)	Dec. 31, 2019 EUR (€)	Sep. 30, 2019 EUR (€)	Jun. 30, 2019 EUR (€)	May 30, 2017 USD ($)
Debt Instrument [Line Items]
Long-term debt				$ 611,025,000			$ 611,706,000
Debt default, maximum period of failure to comply with obligations, covenants or agreements							60 days	60 days
Debt default, holder percent to declare all notes due, minimum							30.00%			30.00%
Term loan facility balance				630,635,000			$ 630,200,000
Long-term debt				615,035,000			617,740,000
Long-term debt, current				4,010,000			6,034,000
Repayments under revolving credit facility							316,910,000		$ 69,600,000
European Operations [Member]
Debt Instrument [Line Items]
Long-term debt							$ 11,000,000.0								$ 70,700,000
Senior Notes, 6.00%, due 2025 [Member] \| Senior Notes [Member]
Debt Instrument [Line Items]
Debt Instrument, Face Amount		€ 250,000,000.0		$ 6,600,000	$ 7,800,000	$ 22,400,000			7,800,000			€ 6,000,000.0	€ 7,000,000.0	€ 20,000,000.0
Debt instrument, interest rate stated, percentage		6.00%		6.00%			6.00%			6.00%		6.00%
Debt instrument, repurchase amount				$ 6,500,000	7,600,000	21,800,000			7,600,000
Long-term debt				6,300,000	6,600,000	19,400,000			$ 6,600,000
Net gain on extinguishment of debt				300,000	$ 1,000,000.0	$ 2,400,000
Term loan facility balance				243,074,000			$ 254,904,000
Long-term debt				$ 237,666,000			250,234,000
Senior Secured Term Loan Facility [Member] \| Senior Notes [Member]
Debt Instrument [Line Items]
Amount of term loan facility			$ 400,000,000.0
Line of credit facility maturity date			May 23, 2024
Repayments under term loan facility							50,800,000
Term loan facility balance							349,200,000
Amount outstanding							4,800,000
Senior Secured Term Loan Facility [Member] \| London Interbank Offered Rate (LIBOR) [Member] \| Minimum [Member] \| Senior Notes [Member]
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate			0.00%
Senior Secured Term Loan Facility [Member] \| London Interbank Offered Rate (LIBOR) [Member] \| Maximum [Member] \| Senior Notes [Member]
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate			4.00%
Senior Secured Term Loan Facility [Member] \| Base Rate [Member] \| Senior Notes [Member]
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate			2.00%
Senior Secured Term Loan Facility [Member] \| Federal Funds Effective Swap Rate [Member] \| Senior Notes [Member]
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate			0.50%
Senior Secured Term Loan Facility [Member] \| One Month London Interbank Offered Rate (LIBOR) [Member] \| Senior Notes [Member]
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate			1.00%
Senior Secured Term Loan Facility [Member] \| One Month LIBOR Plus Margin [Member] \| Senior Notes [Member]
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate			3.00%
Equipment Loan [Member]
Debt Instrument [Line Items]
Debt instrument, interest rate stated, percentage				2.67%								2.67%
Long-term debt				$ 13,400,000								€ 12,000,000.0
Loans outstanding							12,400,000			€ 10,600,000
Debt Instrument Redemption Period One [Member] \| Senior Notes, 6.00%, due 2025 [Member] \| Senior Notes [Member]
Debt Instrument [Line Items]
Redemption percentage		103.00%
Debt Instrument Redemption Period Two [Member] \| Senior Notes, 6.00%, due 2025 [Member] \| Senior Notes [Member]
Debt Instrument [Line Items]
Redemption percentage		101.50%
Debt Instrument Redemption Period Three [Member] \| Senior Notes, 6.00%, due 2025 [Member] \| Senior Notes [Member]
Debt Instrument [Line Items]
Redemption percentage		100.00%
Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Commitment fees percentage	0.50%
Outstanding borrowings and undrawn letters of credit threshold amount							20,000,000
Line of credit facility, commitment amount							$ 160,000,000
Revolving Credit Facility [Member] \| Minimum [Member]
Debt Instrument [Line Items]
Commitment fees percentage	0.50%
Net leverage ratio							1.00%	1.00%
Revolving Credit Facility [Member] \| Maximum [Member]
Debt Instrument [Line Items]
Commitment fees percentage	0.25%
Net leverage ratio							4.50%	4.50%
Line of credit facility borrowing capacity percentage							35.00%	35.00%
Revolving Credit Facility [Member] \| London Interbank Offered Rate (LIBOR) [Member]
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate	3.50%
Revolving Credit Facility [Member] \| London Interbank Offered Rate (LIBOR) [Member] \| Minimum [Member]
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate	3.50%
Revolving Credit Facility [Member] \| London Interbank Offered Rate (LIBOR) [Member] \| Maximum [Member]
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate	3.00%
Revolving Credit Facility [Member] \| Base Rate [Member]
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate	2.50%
Revolving Credit Facility [Member] \| Base Rate [Member] \| Minimum [Member]
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate	2.50%
Revolving Credit Facility [Member] \| Base Rate [Member] \| Maximum [Member]
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate	2.00%
Revolving Credit Facility [Member] \| Senior Secured Term Loan Facility [Member]
Debt Instrument [Line Items]
Amount of term loan facility			$ 160,000,000.0
Line of credit facility maturity date			May 23, 2022
Outstanding borrowings							$ 0
Revolving Credit Facility [Member] \| Senior Secured Term Loan Facility [Member] \| Senior Notes [Member]
Debt Instrument [Line Items]
Amount of availability							$ 155,200,000
Term Loan Facility [Member] \| Senior Secured Term Loan Facility [Member]
Debt Instrument [Line Items]
Percentage of capital stock issued							65.00%			65.00%
Equipment Loan [Member] \| European Operations [Member]
Debt Instrument [Line Items]
Debt instrument, interest rate stated, percentage							2.20%			2.20%
European Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Outstanding borrowings							$ 0
Amount outstanding							500,000			€ 400,000
Amount of availability							70,000,000.0			€ 59,600,000
Percentage of management fee						0.07%
Debt instrument expiry date						May 22, 2022
European Revolving Credit Facility [Member] \| Minimum [Member]
Debt Instrument [Line Items]
Current borrowing capacity under line of credit \| €											€ 45,000,000.0			30,000,000.0
Annual commitment fee						0.50%
European Revolving Credit Facility [Member] \| Maximum [Member]
Debt Instrument [Line Items]
Current borrowing capacity under line of credit \| €											€ 60,000,000.0			€ 45,000,000.0
Annual commitment fee						1.05%
European Revolving Credit Facility [Member] \| Euribor [Member]
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate						0.00%
European Revolving Credit Facility [Member] \| Euribor [Member] \| Minimum [Member]
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate						1.55%
European Revolving Credit Facility [Member] \| Euribor [Member] \| Maximum [Member]
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate						3.00%
European Revolving Credit Facility [Member] \| Equipment Loan [Member]
Debt Instrument [Line Items]
Debt instrument expiry date				Sep. 30, 2027
Quarterly payment							$ 500,000	€ 400,000
Quarterly payment, start date							Dec. 31, 2020	Dec. 31, 2020