Amount of paid and unpaid paid-in-kind dividends (PIK) in debentures.

No definition available.

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- Definition

The increase (decrease) in long term debt during the period.

+ References

No definition available.

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- Definition

Amount of increase (decrease) in cash. Cash is the amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Includes effect from exchange rate changes.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 830
-SubTopic 230
-Section 45
-Paragraph 1
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Aggregate dividends paid during the period for each share of common stock outstanding.

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- Definition

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

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No definition available.

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- Definition

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

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.22(a)(1))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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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

The total amount of the contingent obligation under letters of credit outstanding as of the reporting date.

+ References

No definition available.

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- Definition

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.

+ References

No definition available.

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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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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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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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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
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- Definition

The increase (decrease) in stockholders' equity during the period.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section S99
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Debt - Additional Information (Details)		12 Months Ended
Debt - Additional Information (Details)	Mar. 09, 2017 USD ($) $ / shares	Dec. 30, 2017 USD ($)	Dec. 30, 2017 KRW (₩)
Debt Instrument [Line Items]
Cash dividend (in dollars per share) \| $ / shares	$ 3
Cash dividend, subordinated debentures (in dollars per share) \| $ / shares	$ 5
Decrease in stockholders' equity	$ 458,700,000
Increase in long term debt	284,500,000
Decrease in cash	$ 174,200,000
Subordinated Debt [Member]
Debt Instrument [Line Items]
Debt, stated interest rate		6.00%	6.00%
Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Line of credit facility, current borrowing capacity		$ 350,000,000.0
Credit Agreement [Member]
Debt Instrument [Line Items]
Outstanding letters of credit		8,400,000
Jungwoo-Mueller [Member]
Debt Instrument [Line Items]
Line of credit facility maximum borrowing capacity		$ 27,500,000	₩ 29,900,000,000.0
Minimum [Member] \| Credit Agreement [Member]
Debt Instrument [Line Items]
Credit facility commitment fee		0.15%
Maximum [Member] \| Credit Agreement [Member]
Debt Instrument [Line Items]
Credit facility commitment fee		0.30%
LIBOR [Member] \| Credit Agreement [Member]
Debt Instrument [Line Items]
Basis spread on variable rate		1.50%
LIBOR [Member] \| Minimum [Member] \| Credit Agreement [Member]
Debt Instrument [Line Items]
Basis spread on variable rate		1.125%
LIBOR [Member] \| Maximum [Member] \| Credit Agreement [Member]
Debt Instrument [Line Items]
Basis spread on variable rate		1.625%
Base Rate [Member] \| Credit Agreement [Member]
Debt Instrument [Line Items]
Basis spread on variable rate		0.50%
Base Rate [Member] \| Minimum [Member] \| Credit Agreement [Member]
Debt Instrument [Line Items]
Basis spread on variable rate		0.125%
Base Rate [Member] \| Maximum [Member] \| Credit Agreement [Member]
Debt Instrument [Line Items]
Basis spread on variable rate		0.625%