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Note 10. Contract Acquisition Costs Payable (Detail) (USD $) In Millions, unless otherwise specified | Sep. 30, 2012 | Jan. 01, 2012
--- | --- | ---
Contract Acquisition Costs Payable Net of Discount | $ 4.8 | $ 5.6
Contract Acquisition Costs Payable Discount | 1.6 | 2.3
| $ 1.2 |

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- 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

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- Definition No authoritative reference available. + References No definition available. + Details
Name: | laco_ContractAcquisitionCostsPayableDiscount
Namespace Prefix: | laco_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition No authoritative reference available. + References No definition available. + Details
Name: | laco_ContractAcquisitionCostsPayableNetOfDiscount
Namespace Prefix: | laco_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant