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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Debt instrument debt covenants debt default holder percent to declare all notes due minimum.

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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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Date when the debt instrument is scheduled to be fully repaid, in CCYY-MM-DD format.

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Percentage price of original principal amount of debt at which debt can be redeemed by the issuer.

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Fair value amount of debt instrument that was repurchased.

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Difference between the fair value of payments made and the carrying amount of debt which is extinguished prior to maturity.

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The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

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Amount of the fee for available but unused credit capacity under the credit facility.

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

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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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Amount after unamortized (discount) premium and debt issuance costs of long-term debt classified as noncurrent and excluding amounts to be repaid within one year or the normal operating cycle, if longer. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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Debt - Additional Information (Detail)			1 Months Ended		3 Months Ended			12 Months Ended
Debt - Additional Information (Detail)	Jun. 15, 2017 EUR (€)	Mar. 22, 2017 USD ($)	Jun. 30, 2021 USD ($)	Jun. 30, 2021 EUR (€)	Sep. 30, 2020	Dec. 31, 2019 USD ($)	Jun. 30, 2019 EUR (€)	Dec. 31, 2020 USD ($)	Dec. 31, 2019 USD ($)	Dec. 31, 2020 EUR (€)	Jan. 31, 2020 EUR (€)	Dec. 31, 2019 EUR (€)	May 30, 2017 USD ($)	May 30, 2017 EUR (€)
Debt Instrument [Line Items]
Long-term debt						$ 611,025,000		$ 625,492,000	$ 611,025,000
Debt default, maximum period of failure to comply with obligations, covenants or agreements								60 days
Debt default, holder percent to declare all notes due, minimum								30.00%		30.00%
Term loan facility balance						630,635,000		$ 643,184,000	630,635,000
Long-term debt						615,035,000		$ 631,604,000	615,035,000
Long-term debt, term								5 years		5 years
European Operations [Member]
Debt Instrument [Line Items]
Long-term debt													$ 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					36,800,000			36,800,000			€ 33,000,000.0
Debt instrument, interest rate stated, percentage	6.00%
Debt instrument, repurchase amount						35,900,000			35,900,000
Long-term debt						$ 32,300,000			32,300,000
Net gain on extinguishment of debt									$ 3,700,000
Senior Secured Term Loan Facility [Member] \| Senior Notes [Member]
Debt Instrument [Line Items]
Amount of term loan facility		$ 400,000,000.0						$ 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						2.30%			2.30%			2.30%
Long-term debt						$ 13,400,000			$ 13,400,000			€ 12,000,000.0
Loans outstanding								13,000,000.0		€ 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%
Revolving Credit Facility [Member] \| Maximum [Member]
Debt Instrument [Line Items]
Commitment fees percentage					0.25%
Net leverage ratio								4.50%
Line of credit facility borrowing capacity percentage								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%
Long-term debt								$ 10,700,000
Debt instrument, maturity date								Mar. 31, 2024
European Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Outstanding borrowings								$ 0
Amount outstanding								500,000		€ 400,000
Amount of availability								$ 73,300,000		€ 59,600,000
Current borrowing capacity under line of credit \| €														€ 30,000,000.0
Debt instrument, maturity date							May 22, 2022
Percentage of management fee							0.07%
European Revolving Credit Facility [Member] \| Minimum [Member]
Debt Instrument [Line Items]
Current borrowing capacity under line of credit \| €							€ 30,000,000.0				€ 45,000,000.0
Annual commitment fee							0.50%
European Revolving Credit Facility [Member] \| Maximum [Member]
Debt Instrument [Line Items]
Current borrowing capacity under line of credit \| €							€ 45,000,000.0				€ 60,000,000.0
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, maturity date						Sep. 30, 2027
Quarterly payment, start date								Jun. 30, 2021
European Revolving Credit Facility [Member] \| Equipment Loan [Member] \| Scenario, Forecast [Member]
Debt Instrument [Line Items]
Quarterly payment			$ 600,000	€ 500,000