Percentage of quarterly installments of the original principal, with balance payable at maturity.

No definition available.

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- Definition

The period of principal payments pursuant to the debt agreement.

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No definition available.

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- Definition

Represents decrease deferred financing costs for extinguishment of debt.

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No definition available.

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Represents the number of available lines of credit as of the balance sheet date.

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No definition available.

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

+ References

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.

+ References

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- Definition

Amount of assets pledged to secure a debt instrument.

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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

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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Balance Type:	na
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Gross amount of debt extinguished.

+ References

No definition available.

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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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- Definition

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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Balance Type:	credit
Period Type:	instant

- 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.

+ References

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Period Type:	instant

- 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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Period Type:	instant

- 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.

+ References

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- Definition

The fair value amount of long-term debt whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission.

+ References

No definition available.

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- Definition

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

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Note 3 - Borrowings and Credit Agreements (Details Textual) $ in Thousands, € in Millions, SFr in Millions				1 Months Ended				3 Months Ended		6 Months Ended
	Jun. 30, 2021 USD ($)	Jun. 26, 2021 USD ($)	Oct. 01, 2018 USD ($)	Mar. 27, 2021 EUR (€)	Jun. 30, 2020 EUR (€)	Aug. 31, 2019 EUR (€)	Jul. 31, 2019	Jun. 26, 2021 USD ($)	Jun. 27, 2020 USD ($)	Jun. 26, 2021 USD ($)	Jun. 27, 2020 USD ($)	Jun. 26, 2021 EUR (€)	Jun. 26, 2021 CHF (SFr)	Dec. 26, 2020 USD ($)
Long-term Debt, Current Maturities, Total		$ 105,634						$ 105,634		$ 105,634				$ 8,389
Repayments of Long-term Debt, Total										104,811	$ 2,162
Gain (Loss) on Extinguishment of Debt, Total								0	$ 0	(1,761)	$ 0
Long-term Line of Credit, Total		3,160						3,160		3,160				5,314
Ismeca [Member]
Line of Credit Facility, Maximum Borrowing Capacity \| SFr													SFr 2
Long-term Line of Credit, Total		$ 0						$ 0		$ 0				0
Number of Available Lines of Credit		1						1		1		1	1
Revolving Credit Facility [Member]
Line of Credit Facility, Maximum Borrowing Capacity		$ 8,700						$ 8,700		$ 8,700
Long-term Line of Credit, Total		3,200						3,200		3,200
Secured Term Loan Facility [Member]
Debt Instrument, Face Amount			$ 350,000
Debt Instrument, Amortization, Percentage of Principal Amount			0.25%
Long-term Debt, Total		200,600						200,600		200,600				301,100
Long-term Debt, Current Maturities, Total	$ 100,000	101,400						101,400		101,400				2,400
Long-term Debt, Fair Value		203,300						203,300		203,300
Extinguishment of Debt, Amount										100,000
Repayments of Long-term Debt, Total										100,000
Gain (Loss) on Extinguishment of Debt, Total										(1,800)
Extinguishment of Debt Decrease Deferred Financing Costs										1,800
Long-term Debt, Gross		204,005						204,005		204,005				306,630
Secured Term Loan Facility [Member] \| Subsequent Event [Member]
Repayments of Long-term Debt, Total	$ 100,000
Secured Term Loan Facility [Member] \| London Interbank Offered Rate (LIBOR) [Member]
Debt Instrument, Basis Spread on Variable Rate			3.00%
Kita Term Loans [Member]
Long-term Debt, Total		3,300						3,300		3,300				3,600
Long-term Debt, Current Maturities, Total		300						300		300				300
Long-term Debt, Gross		$ 3,296						$ 3,296		$ 3,296				3,662
Kita Term Loans [Member] \| Minimum [Member]
Debt Instrument, Interest Rate, Stated Percentage		0.05%						0.05%		0.05%		0.05%	0.05%
Kita Term Loans [Member] \| Maximum [Member]
Debt Instrument, Interest Rate, Stated Percentage		0.44%						0.44%		0.44%		0.44%	0.44%
First Facility [Member] \| Construction Loans [Member]
Debt Instrument, Interest Rate, Stated Percentage						0.80%
Debt Instrument, Term (Year)						10 years	10 years
Debt Instrument, Principal Payment Terms (Year)						8 years
Debt Instrument, Collateral Amount \| €						€ 3.4
Second Facility [Member] \| Construction Loans [Member]
Debt Instrument, Interest Rate, Stated Percentage				1.05%
Debt Instrument, Term (Year)				15 years	15 years
Debt Instrument, Principal Payment Terms (Year)				15 years
Debt Instrument, Collateral Amount \| €				€ 5.2
Third Facility [Member] \| Construction Loans [Member]
Debt Instrument, Interest Rate, Stated Percentage		1.20%						1.20%		1.20%		1.20%	1.20%
Debt Instrument, Term (Year)		10 years
Debt Instrument, Principal Payment Terms (Year)		10 years
Debt Instrument, Collateral Amount \| €												€ 0.4
Loan Facilities [Member] \| Construction Loans [Member]
Debt Instrument, Face Amount \| €					€ 10.1
Long-term Debt, Total		$ 10,300						$ 10,300		$ 10,300				9,900
Long-term Debt, Current Maturities, Total		$ 800						$ 800		$ 800				$ 400