10.	INCOME TAXES

The Company determines its periodic income tax benefit or expense based upon the current period income and the annual estimated tax rate for the Company adjusted for any change to prior period estimates. The estimated tax rate is revised, if necessary, as of the end of each successive interim period during the fiscal year to the Company's current annual estimated tax rate.

For the three months ended September 30, 2016, the income tax benefit reflects an effective tax rate of 30.8 percent compared to an effective tax rate of 34.8 percent for the comparable period in the prior year. For the nine months ended September 30, 2016, the income tax benefit reflects an effective tax rate of 41.9 percent compared to an effective tax rate of 35.2 percent for the comparable period in the prior year. The nine-month effective tax rate includes a discrete income tax benefit of $15.7 million recognized during the first quarter of 2016 related to the favorable resolution of uncertain state income tax positions. As a result of this adjustment, the balance of unrecognized tax benefits as of September 30, 2016 was approximately $2.2 million.

The Company adopted the provisions of Accounting Standards Update 2015-17 as of the year ended December 31, 2015 that requires all deferred tax balances to be classified as non-current. Accordingly, the net deferred tax balance has been reflected as a non-current liability in the accompanying balance sheet as of September 30, 2016.