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Note 12. Financial Instruments and Fair Value Measurements (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended							12 Months Ended	3 Months Ended
	Mar. 31, 2013	Dec. 30, 2012	Jan. 01, 2012	Mar. 31, 2013 Shingle Springs Tribe [Member]	Dec. 30, 2012 Shingle Springs Tribe [Member]	Mar. 31, 2013 Contract Acquisition Cost [Member]	Dec. 30, 2012 Contract Acquisition Cost [Member]	Jan. 01, 2012 Interest Receivable [Member]	Mar. 31, 2013 Other Indian Casino Assets [Member]
Notes Receivable, Fair Value Disclosure				$ 53.2	$ 49.9
Fair Value Inputs, Discount Rate	11.80%	19.50%						12.80%	19.50%
Fair Value Inputs, Period			97
Other Assets, Fair Value Disclosure	3.2	4.0
Contract Acquisition Costs Payable Fair Value						$ 4.3	$ 4.6

X

- Definition

No authoritative reference available.

+ References

No definition available.

+ Details

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Namespace Prefix:	laco_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

No authoritative reference available.

+ References

No definition available.

+ Details

Name:	laco_FairValueInputsPeriod
Namespace Prefix:	laco_
Data Type:	us-types:durationStringItemType
Balance Type:	na
Period Type:	instant

X

- Definition

Interest rate used to find the present value of an amount to be paid or received in the future as an input to measure fair value. For example, but not limited to, weighted average cost of capital (WACC), cost of capital, cost of equity and cost of debt.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 820

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (bbb)

-URI http://asc.fasb.org/extlink&oid=7578670&loc=d3e19207-110258

+ Details

Name:	us-gaap_FairValueInputsDiscountRate
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

X

- Definition

This element represents the portion of the balance sheet assertion valued at fair value by the entity 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. An amount representing an agreement for an unconditional promise by the maker to pay the Company (holder) a definite sum of money at a future date(s).

+ References

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 210.5-02.3(b))

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682



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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 3

-Subparagraph b

-Article 5

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

This element represents the portion of the balance sheet assertion valued at fair value by the entity 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. This element represents the fair value of assets categorized as other which are not in and of themselves material enough to require separate disclosure.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant