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

No definition available.

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- Definition

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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- Definition

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

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- Definition

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

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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.

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- Definition

Amount of the required periodic payments applied to principal.

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- Definition

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.

+ References

No definition available.

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- Definition

Amount of unamortized debt discount (premium) and debt issuance costs.

+ References

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- Definition

Amount of unused borrowing capacity under the long-term financing arrangement that is available to the entity as of the balance sheet date.

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- Definition

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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- Definition

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

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- Definition

Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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- Definition

Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt, classified as current. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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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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Weighted average interest rate of long-term debt outstanding calculated at point in time.

+ References

No definition available.

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- Definition

The cash inflow from a debt initially having maturity due after one year or beyond the operating cycle, if longer.

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The cash outflow for debt initially having maturity due after one year or beyond the normal operating cycle, if longer.

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Debt (Details)	1 Months Ended		6 Months Ended
Debt (Details)	Mar. 31, 2021 USD ($)	Oct. 31, 2020 USD ($)	Jun. 30, 2021 USD ($)	Jun. 30, 2021 KRW (₩)	Apr. 30, 2021 KRW (₩)	Dec. 31, 2020 USD ($)	Dec. 31, 2019 USD ($)	Jul. 31, 2018 USD ($)
Debt Instrument [Line Items]
Long-term Debt			$ 1,059,933,000			$ 1,164,302,000
Less: Unamortized discount and deferred debt costs, net			(8,614,000)			(9,956,000)
Less: Short-term borrowings and current portion of long-term debt			(134,912,000)			(149,007,000)
Long-term debt			916,407,000			1,005,339,000
Senior Notes \| 6.625% Senior notes, due September 2027
Debt Instrument [Line Items]
Debt			$ 525,000,000			525,000,000
Stated interest rate (as a percent)			6.625%	6.625%
Subsidiary Term Loans
Debt Instrument [Line Items]
Debt			$ 0			2,039,000
Subsidiary Term Loans \| Term loan, applicable bank rate plus 1.77%, due April 2023 \| Korea
Debt Instrument [Line Items]
Debt			$ 49,721,000			51,541,000
Subsidiary Term Loans \| Term loan, applicable bank rate plus 1.77%, due April 2023 \| Korea \| Applicable Bank Rate
Debt Instrument [Line Items]
Basis spread on variable rate (as a percent)			1.77%
Subsidiary Term Loans \| Term Loan Due April 2024 \| Korea
Debt Instrument [Line Items]
Debt			$ 0			0
Stated interest rate (as a percent)			1.85%	1.85%
Unused borrowing capacity			$ 71,000,000	₩ 80,000,000,000.0
Face amount of debt \| ₩					₩ 80,000,000,000
Payments of long-term debt			71,000,000.0
Proceeds from issuance of long-term debt			71,000,000.0
Subsidiary Term Loans \| Term loan, applicable bank rate plus 1.98%, due December 2028 \| Korea
Debt Instrument [Line Items]
Debt			$ 50,000,000			50,000,000
Subsidiary Term Loans \| Term loan, applicable bank rate plus 1.98%, due December 2028 \| Korea \| Applicable Bank Rate
Debt Instrument [Line Items]
Basis spread on variable rate (as a percent)			1.98%
Subsidiary Term Loans \| Short-term term loans, variable rate \| Japan
Debt Instrument [Line Items]
Debt			$ 1,818,000			6,663,000
Unused borrowing capacity			$ 9,000,000.0
Subsidiary Term Loans \| Short-term term loans, variable rate \| Japan \| Weighted Average
Debt Instrument [Line Items]
Weighted average interest rate (as a percent)			0.38%	0.38%
Subsidiary Term Loans \| Short-term term loans, variable rate \| Japan \| TIBOR
Debt Instrument [Line Items]
Basis spread on variable rate (as a percent)			0.30%
Subsidiary Term Loans \| Term loan, fixed rate at 0.86%, due June 2022 \| Japan
Debt Instrument [Line Items]
Debt			$ 9,000,000			14,528,000
Stated interest rate (as a percent)			0.86%	0.86%
Subsidiary Term Loans \| Term loan, fixed rate at 0.60%, due July 2022 \| Japan
Debt Instrument [Line Items]
Debt			$ 2,250,000			3,390,000
Stated interest rate (as a percent)			0.60%	0.60%
Subsidiary Term Loans \| Term loan, fixed rate at 1.30%, due July 2023 \| Japan
Debt Instrument [Line Items]
Debt			$ 105,301,000			138,499,000
Stated interest rate (as a percent)			1.30%	1.30%
Subsidiary Term Loans \| Term loan, fixed rate at 1.35%, due December 2024 \| Japan
Debt Instrument [Line Items]
Debt			$ 179,552,000			220,823,000
Stated interest rate (as a percent)			1.35%	1.35%
Subsidiary Term Loans \| Term Loan, Fixed Rate at 1.20% Due December 2025 \| Japan
Debt Instrument [Line Items]
Debt			$ 88,291,000			105,569,000
Stated interest rate (as a percent)			1.20%	1.20%
Subsidiary Term Loans \| Term loan, LIBOR plus 1.60%, due March 2022 \| China
Debt Instrument [Line Items]
Debt			$ 0			28,000,000
Subsidiary Term Loans \| Term loan, LIBOR plus 1.60%, due March 2022 \| China \| LIBOR
Debt Instrument [Line Items]
Basis spread on variable rate (as a percent)			1.60%
Subsidiary Term Loans \| Term Loan, LIBOR plus 1.40% due March 2022 \| China
Debt Instrument [Line Items]
Debt			$ 0			18,250,000
Subsidiary Term Loans \| Term Loan, LIBOR plus 1.40% due March 2022 \| China \| LIBOR
Debt Instrument [Line Items]
Basis spread on variable rate (as a percent)			1.40%
Subsidiary Term Loans \| Term Loan, LIBOR plus 1.10% Due March 2024 \| China
Debt Instrument [Line Items]
Debt			$ 49,000,000			0
Subsidiary Term Loans \| Term Loan, LIBOR plus 1.10% Due March 2024 \| China \| Weighted Average
Debt Instrument [Line Items]
Weighted average interest rate (as a percent)			1.24%	1.24%
Subsidiary Term Loans \| Term Loan, LIBOR plus 1.10% Due March 2024 \| China \| LIBOR
Debt Instrument [Line Items]
Basis spread on variable rate (as a percent)			1.10%
Proceeds from issuance of long-term debt	$ 50,000,000.0
Subsidiary Term Loans \| Term Loan One, LIBOR plus 1.10% Due March 2024 \| China
Debt Instrument [Line Items]
Periodic principal payment	500,000
Subsidiary Term Loans \| Term Loan One, LIBOR plus 1.10% Due March 2024 \| China \| LIBOR
Debt Instrument [Line Items]
Face amount of debt	20,000,000.0
Subsidiary Term Loans \| Term Loan Two, LIBOR plus 1.10% Due March 2024 \| China
Debt Instrument [Line Items]
Periodic principal payment	500,000
Subsidiary Term Loans \| Term Loan Two, LIBOR plus 1.10% Due March 2024 \| China \| LIBOR
Debt Instrument [Line Items]
Face amount of debt	$ 30,000,000.0
Subsidiary Term Loans \| Revolving credit facility, TAIFX plus the applicable bank rate, due December 2024 (Taiwan) \| Revolving Credit Facility \| Taiwan
Debt Instrument [Line Items]
Face amount of debt							$ 20,000,000.0
Line of Credit \| Revolving Credit Facility \| Korea
Debt Instrument [Line Items]
Debt			$ 0			0
Credit facility, borrowing capacity		$ 30,000,000
Basis spread on variable rate (as a percent)			1.11%
Renewal term		1 year
Unused borrowing capacity			$ 30,000,000.0
Line of Credit \| $250 million senior secured revolving credit facility, LIBOR plus 1.25%-1.75%, due July 2023 (Singapore) \| Revolving Credit Facility
Debt Instrument [Line Items]
Remaining borrowing capacity			250,000,000.0
Line of Credit \| $250 million senior secured revolving credit facility, LIBOR plus 1.25%-1.75%, due July 2023 (Singapore) \| Revolving Credit Facility \| Singapore
Debt Instrument [Line Items]
Debt			$ 0			0
Credit facility, borrowing capacity								$ 250,000,000.0
Line of Credit \| $250 million senior secured revolving credit facility, LIBOR plus 1.25%-1.75%, due July 2023 (Singapore) \| Revolving Credit Facility \| Singapore \| LIBOR \| Minimum
Debt Instrument [Line Items]
Basis spread on variable rate (as a percent)			1.25%
Line of Credit \| $250 million senior secured revolving credit facility, LIBOR plus 1.25%-1.75%, due July 2023 (Singapore) \| Revolving Credit Facility \| Singapore \| LIBOR \| Maximum
Debt Instrument [Line Items]
Basis spread on variable rate (as a percent)			1.75%
Line of Credit \| Revolving credit facility, TAIFX plus the applicable bank rate, due December 2024 (Taiwan) \| Revolving Credit Facility \| Taiwan
Debt Instrument [Line Items]
Debt			$ 0			$ 0
Credit facility, borrowing capacity							36,000,000.0
Unused borrowing capacity			$ 36,000,000.0
Revolving credit facilities and term loans \| Revolving credit facility, TAIFX plus the applicable bank rate, due December 2024 (Taiwan) \| Revolving Credit Facility \| Taiwan
Debt Instrument [Line Items]
Long-term Debt							$ 56,000,000.0