Impairment of Intangible and Long-Lived Assets Accrued Liabilities  Income Taxes  When factors indicate that there may be a decrease in value of an equity or cost method investment, we assess that investment  and determine whether a loss in value has occurred. If that loss is deemed to be other than temporary, an impairment loss is  recorded accordingly. For any investments that indicate a potential impairment, we estimate the fair values of those investments  using discounted cash flow models, unrelated third party valuations or industry comparables, based on the various facts available  to us. For the year ended December 31, 2010, we recorded impairments of $6.7 million related to three of our investments. The  impairments are recorded in the gain (loss) from equity and cost method investees in our consolidated statement of operations. No impairment was recorded for the years ended December 31, 2009 or 2008. In addition to our equity and cost method investments mentioned above, we hold one loan in a real estate venture. During  2008, we reserved 100% of the loan through a $3.9 million charge to other operating divisions expense in our consolidated  statements of operations.  The accounting guidance for goodwill and other intangible assets requires that goodwill and indefinite-lived intangible assets be  tested for impairment at least annually. The guidance prescribes a two-step method for determining goodwill impairment. In the  first step, the Company determines the fair value of the reporting unit and compares that fair value to the net book value of the  reporting unit. The fair value of the reporting unit is determined using various valuation techniques, including quoted market  prices, observed earnings /cash flow multiples paid for comparable television stations and discounted cash flow models. If the  net book value of the reporting unit were to exceed the fair value, we would then perform the second step of the impairment test,  which requires allocation of the reporting unit’s fair value to all of its assets and liabilities in a manner similar to a purchase price  allocation, with any residual fair value being allocated to goodwill. An impairment charge will be recognized only when the  implied fair value of a reporting unit’s goodwill is less than its carrying amount. Broadcast licenses are analyzed at the market  level. When evaluating whether a broadcast license is impaired, we compare the fair value of the broadcast licenses to the carrying  amount of those same broadcast licenses. If the carrying amount of the broadcast licenses exceeds the fair value, then an  impairment loss is recorded to the extent that the carrying value of the broadcast licenses exceeds the fair value.  We periodically evaluate our long-lived assets for impairment and continue to evaluate them as events or changes in  circumstances indicate that the carrying amount of such assets may not be fully recoverable. We evaluate the recoverability of  long-lived assets by measuring the carrying amount of the assets against the estimated undiscounted future cash flows associated  with them. At the time that such evaluations indicate that the future undiscounted cash flows of certain long-lived assets are not  sufficient to recover the carrying value of such assets, the assets are tested for impairment by comparing their estimated fair value  to the carrying value. We typically estimate fair value using discounted cash flow models and appraisals. See  Note 4. Goodwill and  Other Intangible Assets , for more information.  Accrued liabilities consisted of the following as of December 31, 2010 and 2009 (in thousands):  We recognize deferred tax assets and liabilities based on the differences between the financial statement carrying amounts and  the tax bases of assets and liabilities. We provide a valuation allowance for deferred tax assets if we determine, based on the  weight of all available evidence, that it is more likely than not that some or all of the deferred tax assets will not be realized. As of  December 31, 2010, valuation allowances have been provided for a substantial amount of our available state net operating losses. Management periodically performs a comprehensive review of our tax positions and accrues amounts for tax contingencies. Based on these reviews, the status of ongoing audits and the expiration of applicable statute of limitations, accruals are adjusted as  necessary in accordance with income tax accounting guidance.  2010 Annual Report    37  2010 2009 Compensation and employee insurance  $ 16,637  $ 13,989  Interest  13,528  16,653 Other accruals relating to operating expenses  29,027  20,093  Deferred revenue  8,879  9,788  Total  accrued  liabilities  $ 68,071  $ 60,523  We expense these activities when incurred.