Covenants and Events of Default	9 Months Ended
Sep. 30, 2012
Debt Disclosure [Abstract]
Long-Term Debt and Credit Arrangements	Covenants and Events of Default Our debt and credit agreements require us to comply with various affirmative, restrictive and financial covenants. Our failure to comply with any of these covenants, or to pay principal, interest or other amounts when due thereunder, would constitute an event of default under the applicable agreements. Under certain circumstances, the occurrence of an event of default under one of our debt or credit agreements (or the acceleration of the maturity of the indebtedness under one of our agreements) may constitute an event of default under one or more of our other debt or credit agreements. Default under our debt and credit agreements could result in (1) us no longer being entitled to borrow under the agreements, (2) termination of the agreements, (3) the requirement that any letters of credit under the agreements be cash collateralized, (4) acceleration of the maturity of outstanding indebtedness under the agreements and/or (5) foreclosure on any collateral securing the obligations under the agreements. As of September 30, 2012, we were in compliance with the covenants contained in our senior note agreements, Credit Agreement, and debt agreements related to our consolidated real estate entities. We are not aware of any non-compliance by any of our unconsolidated entities with the covenants contained in their debt agreements. Subsequent to September 30, 2012, one of our consolidated real estate entities was in default under debt agreements as a result of its failure to make a timely required payment. The affected loans are non-recourse to Granite and these defaults do not result in cross-defaults under other debt agreements under which Granite is the obligor; however, there is recourse to the real estate entity that incurred the debt. The real estate entity in default is currently in discussions with its lenders concerning disposition of the property.

Covenants and Events of Default

Our debt and credit agreements require us to comply with various affirmative, restrictive and financial covenants. Our failure to comply with any of these covenants, or to pay principal, interest or other amounts when due thereunder, would constitute an event of default under the applicable agreements. Under certain circumstances, the occurrence of an event of default under one of our debt or credit agreements (or the acceleration of the maturity of the indebtedness under one of our agreements) may constitute an event of default under one or more of our other debt or credit agreements. Default under our debt and credit agreements could result in (1) us no longer being entitled to borrow under the agreements, (2) termination of the agreements, (3) the requirement that any letters of credit under the agreements be cash collateralized, (4) acceleration of the maturity of outstanding indebtedness under the agreements and/or (5) foreclosure on any collateral securing the obligations under the agreements.

As of September 30, 2012, we were in compliance with the covenants contained in our senior note agreements, Credit Agreement, and debt agreements related to our consolidated real estate entities. We are not aware of any non-compliance by any of our unconsolidated entities with the covenants contained in their debt agreements. Subsequent to September 30, 2012, one of our consolidated real estate entities was in default under debt agreements as a result of its failure to make a timely required payment. The affected loans are non-recourse to Granite and these defaults do not result in cross-defaults under other debt agreements under which Granite is the obligor; however, there is recourse to the real estate entity that incurred the debt. The real estate entity in default is currently in discussions with its lenders concerning disposition of the property.