This excerpt taken from the LMRA 8-K filed Oct 30, 2008.
Use of Estimates
The preparation of consolidated financial statements in conformity with accounting principles generally accepted in United States requires management to make estimates, judgments and assumptions that affect the reported amount of assets, liabilities, revenues and expenses and related disclosures of contingent assets and liabilities. On an on-going basis, the Company evaluates its estimates, including those related to allowances for doubtful accounts, inventory write-downs, valuation of long-lived assets, including property and equipment and identified intangible assets, valuation of deferred taxes and contingencies. In addition, the Company uses assumptions when employing the Black-Scholes option valuation model to calculate the fair value of membership unit-based awards granted. The Company bases its estimates of the carrying value of certain assets and liabilities on historical experience and on various other assumptions that are believed to be reasonable under the circumstances, when these carrying values are not readily available from other sources. Actual results could differ from these estimates.