Represents the capacity of the power generating facilities.

No definition available.

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- Definition

Represents information pertaining to number of affiliates.

+ References

No definition available.

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- Definition

Interest received other than in cash for example on a note receivable from an affiliate. As a noncash item, it is subtracted from net income when calculating cash provided by or used in operations using the indirect method.

+ References

No definition available.

+ Details

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- Definition

Original amount of cost-method investments at the acquisition date.

+ References

No definition available.

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- Definition

The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 323

-SubTopic 10

-Section 50

-Paragraph 3

-Subparagraph (a)(1)

-URI http://asc.fasb.org/extlink&oid=6382943&loc=d3e33918-111571

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The increase (decrease) during the reporting period in the amounts payable to taxing authorities for taxes that are based on the reporting entity's earnings, net of amounts receivable from taxing authorities for refunds of overpayments or recoveries of income taxes, and in deferred and other tax liabilities and assets.

+ References

No definition available.

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- Definition

The net of the gross additions and gross reductions to the investment in and advance to the affiliate.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 946

-SubTopic 320

-Section S99

-Paragraph 6

-Subparagraph (SX 210.12-14.1(b))

-URI http://asc.fasb.org/extlink&oid=34726532&loc=d3e611322-123010

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 14

-Paragraph 1

-Article 12

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- Definition

The equity interest of noncontrolling shareholders, partners or other equity holders in consolidated entity.

+ References

No definition available.

+ Details

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- Definition

The cash outflow associated with the purchase of or advances to an equity method investments, which are investments in joint ventures and entities in which the entity has an equity ownership interest normally of 20 to 50 percent and exercises significant influence.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 13

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3213-108585

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Accounting Policies and Basis of Presentation (Details) (USD $)	3 Months Ended		0 Months Ended
	Apr. 04, 2015 item	Mar. 29, 2014	Apr. 04, 2015	Apr. 05, 2015	Dec. 31, 2006
Supplemental Non-Cash Transactions
Number of affiliates	1seb_NumberOfAffiliates
Non-cash, pay-in-kind interest income and accretion of discount recognized on a note receivable from an affiliate	$ 4,360,000seb_PaidInKindInterestIncome	$ 3,628,000seb_PaidInKindInterestIncome
Change in accounting method
Subsequent event
Increase in investment in affiliates			19,382,000
Effect of change in accounting method
tax impact	0
Dominican Republic \| Power
Subsequent event
Amount investment under cost method					5,910,000
Dominican Republic \| Power \| Maximum
Subsequent event
Percentage of ownership interest accounted as cost method investment					20.00%
Dominican Republic \| Subsequent event \| Power
Subsequent event
Amount invested under equity method				$ 10,000,000
Capacity of power facility (in megawatts)				300
Percentage of ownership interest accounted as equity method investment				29.90%