Income Taxes	3 Months Ended
Mar. 31, 2013
Income Tax Disclosure [Abstract]
Income Taxes	INCOME TAXES As a real estate investment trust, or REIT, if we meet certain requirements we generally are not subject to federal and state corporate income taxes on our income from investments in real estate that we distribute to our shareholders. We are, however, subject to corporate taxes on built-in gains (the excess of fair market value at January 1, 2006 over tax basis on that date) with respect to the REIT’s sale of any real property owned at such date within the first ten years following our conversion to a REIT, except for sales that occur in 2011, 2012 and 2013. The Small Business Jobs Act of 2010 modified the built-in gains provisions to exempt sales of real properties by a REIT in 2011, if five years of the recognition period had elapsed before January 1, 2011. The American Taxpayer Relief Act of 2012, enacted on January 2, 2013, extended the reduced five-year holding period for sales occurring in 2012 and 2013. If applicable, the built-in gains tax is eliminated or deferred if sale proceeds are reinvested in accordance with the like-kind exchange provisions of the Internal Revenue Code. The sale of timber pursuant to a stumpage sale agreement or timber deed is not subject to built-in gains tax. We are required to pay federal and state corporate income taxes on earnings of our Potlatch TRS operations, principally comprised of our wood products manufacturing operations and certain real estate investments held for development and resale. For the three months ended March 31, 2013 and 2012, we recorded income tax provisions of $4.8 million and $1.0 million, respectively, primarily due to pre-tax income related to Potlatch TRS. We reviewed our tax positions at March 31, 2013 and determined that no uncertain tax positions were taken during the first three months of 2013, and that no new information was available that would require derecognition of previously taken positions. We reflect accrued interest related to tax obligations, as well as penalties, in our provision for income taxes. During the three months ended March 31, 2013 and 2012, amounts for interest and penalties included in our tax provision were insignificant. At March 31, 2013 and December 31, 2012, we had no accrued interest or penalties related to income taxes.

Income Taxes

3 Months Ended

Mar. 31, 2013

INCOME TAXES

As a real estate investment trust, or REIT, if we meet certain requirements we generally are not subject to federal and state corporate income taxes on our income from investments in real estate that we distribute to our shareholders. We are, however, subject to corporate taxes on built-in gains (the excess of fair market value at January 1, 2006 over tax basis on that date) with respect to the REIT’s sale of any real property owned at such date within the first ten years following our conversion to a REIT, except for sales that occur in 2011, 2012 and 2013. The Small Business Jobs Act of 2010 modified the built-in gains provisions to exempt sales of real properties by a REIT in 2011, if five years of the recognition period had elapsed before January 1, 2011. The American Taxpayer Relief Act of 2012, enacted on January 2, 2013, extended the reduced five-year holding period for sales occurring in 2012 and 2013. If applicable, the built-in gains tax is eliminated or deferred if sale proceeds are reinvested in accordance with the like-kind exchange provisions of the Internal Revenue Code. The sale of timber pursuant to a stumpage sale agreement or timber deed is not subject to built-in gains tax. We are required to pay federal and state corporate income taxes on earnings of our Potlatch TRS operations, principally comprised of our wood products manufacturing operations and certain real estate investments held for development and resale.

For the three months ended March 31, 2013 and 2012, we recorded income tax provisions of $4.8 million and $1.0 million, respectively, primarily due to pre-tax income related to Potlatch TRS.

We reviewed our tax positions at March 31, 2013 and determined that no uncertain tax positions were taken during the first three months of 2013, and that no new information was available that would require derecognition of previously taken positions.

We reflect accrued interest related to tax obligations, as well as penalties, in our provision for income taxes. During the three months ended March 31, 2013 and 2012, amounts for interest and penalties included in our tax provision were insignificant. At March 31, 2013 and December 31, 2012, we had no accrued interest or penalties related to income taxes.