Consolidated Statements of Cash Flows (USD $) In Thousands, unless otherwise specified	3 Months Ended
Mar. 29, 2014	Mar. 30, 2013
OPERATING ACTIVITIES OF CONTINUING OPERATIONS
Net income	$ 27,638	$ 26,780
Adjustments to reconcile net income to net cash provided by operating activities of continuing operations:
Discontinued operations		(1,029)
Depreciation and amortization of operating property	6,768	6,438
Non-cash interest charges	54	55
Provisions for losses on trade and other accounts receivable	729	829
Gains on sales/disposals of operating property	(59)	(642)
Deferred income taxes, net	(2,088)	1,263
Stock-based compensation	1,164	1,618
Changes in operating assets and liabilities, net of discontinued operations:
Decrease (increase) in trade and other accounts receivable	(41,625)	15,924
Decrease (increase) in other assets	(1,560)	1,181
Increase (decrease) in accounts payable	13,289	(4,625)
Increase in other liabilities	8,108	4,043
Increase in insurance claims	1,251	880
NET CASH PROVIDED BY OPERATING ACTIVITIES OF CONTINUING OPERATIONS	13,669	52,715
INVESTING ACTIVITIES OF CONTINUING OPERATIONS
Net change in other short-term investments	(3,249)
Sales and maturities of investments	14,558	12,702
Purchases of investments	(15,058)	(23,152)
Purchases of operating property	(732)	(1,722)
Proceeds from sales of operating property	276	1,943
NET CASH USED BY INVESTING ACTIVITIES OF CONTINUING OPERATIONS	(4,205)	(10,229)
FINANCING ACTIVITIES OF CONTINUING OPERATIONS
Decrease in cash overdraft	(6,601)	(2,193)
Dividends paid	(18,641)
Proceeds from exercises of stock options	1,133	1,611
Taxes paid in lieu of shares issued related to stock-based compensation plans	(1,650)	(1,633)
Excess tax effect on stock option exercises	505	255
Purchases of common stock	(37,052)
Principal payments on long-term debt and capital lease obligations	(12,862)	(19,853)
NET CASH USED BY FINANCING ACTIVITIES OF CONTINUING OPERATIONS	(75,168)	(21,813)
Cash flows from discontinued operations:
Operating activities of discontinued operations		119
Financing activities of discontinued operations		(4,069)
Net cash used by discontinued operations		(3,950)
Effect of exchange rate changes on cash and cash equivalents	(432)	(225)
Increase (decrease) in cash and cash equivalents	(66,136)	16,498
Cash and cash equivalents at beginning of period	180,302	74,284
Cash and cash equivalents at end of period	$ 114,166	$ 90,782

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The cash inflow associated with the aggregate amount received by the entity through sale or maturity of marketable securities (held-to-maturity or available-for-sale) during the period.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Investing Activities

-URI http://asc.fasb.org/extlink&oid=6516133

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 320

-SubTopic 10

-Section 45

-Paragraph 11

-URI http://asc.fasb.org/extlink&oid=6871852&loc=d3e26853-111562

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 12

-Subparagraph (a),(b)

-URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3179-108585

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Period Type:	duration

- Definition

The cash inflow from the sale of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale.

+ References

+ Details

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Namespace Prefix:	us-gaap_
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Balance Type:	debit
Period Type:	duration

- Definition

The cash inflow associated with the amount received from holders exercising their stock options. This item inherently excludes any excess tax benefit, which the entity may have realized and reported separately.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Financing Activities

-URI http://asc.fasb.org/extlink&oid=6513228

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (j)

-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 14

-Subparagraph (a)

-URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3255-108585

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- Definition

Amount of expense related to write-down of receivables to the amount expected to be collected. Includes, but is not limited to, accounts receivable and notes receivable.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 28

-Subparagraph (a)

-URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 225

-SubTopic 10

-Section S99

-Paragraph 2

-Subparagraph (SX 210.5-03.5)

-URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 03

-Paragraph 5

-Article 5

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Data Type:	xbrli:monetaryItemType
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- Definition

The cash outflow associated with security instruments that either represent a creditor or an ownership relationship with the holder of the investment security with a maturity of beyond one year or normal operating cycle, if longer. Includes repayments of (a) debt, (b) capital lease obligations, (c) mandatory redeemable capital securities, and (d) any combination of (a), (b), or (c).

+ References

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Balance Type:	credit
Period Type:	duration

- Definition

The aggregate amount of noncash, equity-based employee remuneration. This may include the value of stock or unit options, amortization of restricted stock or units, and adjustment for officers' compensation. As noncash, this element is an add back when calculating net cash generated by operating activities using the indirect method.

+ References

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