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Description Of Business And Summary Of Significant Accounting Policies
12 Months Ended
Dec. 31, 2011
Description Of Business And Summary Of Significant Accounting Policies [Abstract]  
Description Of Business And Summary Of Significant Accounting Policies
NOTE 1. Description of Business and Summary of Significant Accounting Policies

Principles of Consolidation: The consolidated financial statements include our accounts and all entities in which we have more than a 50% equity ownership or otherwise exercise unilateral control. All significant intercompany balances and transactions have been eliminated.

Provision for Income Taxes: Deferred income taxes are recognized for the future tax effects of temporary differences between financial and income tax reporting using tax rates in effect for the years in which the differences are expected to reverse. We believe that it is more likely than not that our deferred tax assets will be realized based on future taxable income projections with the exception of $0.1 million related to state tax net operating losses for which a valuation allowance has been established. In the event the probability of realizing the remaining deferred tax assets do not meet the more likely than not threshold in the future, a valuation allowance would be established for the deferred tax assets deemed unrecoverable.

Tax liabilities are recorded when, in management's judgment, a tax position does not meet the more likely than not threshold for recognition as prescribed by the guidance. For tax positions that meet the more likely than not threshold, a tax liability may be recorded depending on management's assessment of how the tax position will ultimately be settled. We recognize interest expense and penalties related to income tax liabilities in our provision for income taxes.

Earnings Per Common Share: Basic earnings per common share are based on the average quarterly weighted average number of Class A and Class B shares of common stock outstanding. Diluted earnings per common share are adjusted for the assumed exercise of dilutive stock options and for restricted stock which are both computed using the treasury stock method.

Use of Estimates: The preparation of financial statements in conformity with U.S. generally accepted accounting principles requires us to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenue and expense during the reporting period. Significant estimates include the allowance for doubtful accounts, revenue, the cost of transportation, commission expense, useful lives of equipment and repair liabilities. Actual results could differ from those estimates.

Reclassifications: Certain prior year amounts have been reclassified to conform to the current year presentation.