XML 14 R39.htm IDEA: XBRL DOCUMENT
v2.4.0.6

Fair Value Measurements (Details) (USD $) In Thousands, unless otherwise specified | Dec. 31, 2012 | Dec. 31, 2011
--- | --- | ---
Equity securities [Member] |  |
Assets measured at fair value on recurring basis [Abstract] |  |
Fair value assets | $ 44 | $ 40
U.S. Treasury securities (cash equivalents) [Member] |  |
Assets measured at fair value on recurring basis [Abstract] |  |
Fair value assets | 6,239 | 10,087
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Equity securities [Member] |  |
Assets measured at fair value on recurring basis [Abstract] |  |
Fair value assets | 44 | 40
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | U.S. Treasury securities (cash equivalents) [Member] |  |
Assets measured at fair value on recurring basis [Abstract] |  |
Fair value assets | 6,239 | 10,087
Significant Other Observable Inputs (Level 2) [Member] | Equity securities [Member] |  |
Assets measured at fair value on recurring basis [Abstract] |  |
Fair value assets | 0 | 0
Significant Other Observable Inputs (Level 2) [Member] | U.S. Treasury securities (cash equivalents) [Member] |  |
Assets measured at fair value on recurring basis [Abstract] |  |
Fair value assets | 0 | 0
Significant Unobservable Inputs (Level 3) [Member] | Equity securities [Member] |  |
Assets measured at fair value on recurring basis [Abstract] |  |
Fair value assets | 0 | 0
Significant Unobservable Inputs (Level 3) [Member] | U.S. Treasury securities (cash equivalents) [Member] |  |
Assets measured at fair value on recurring basis [Abstract] |  |
Fair value assets | $ 0 | $ 0

X
- Details
Name: | lgl_AssetsMeasuredAtFairValueOnRecurringBasisAbstract
Namespace Prefix: | lgl_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition This element represents the aggregate of the assets reported on the balance sheet at period end measured at fair value on a recurring basis by the entity. This element is intended to be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. + References No definition available. + Details
Name: | us-gaap_AssetsFairValueDisclosureRecurring
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant