Covenants and Events of Default	9 Months Ended
Sep. 30, 2015
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 (i) us no longer being entitled to borrow under the agreements; (ii) termination of the agreements; (iii) the requirement that any letters of credit under the agreements be cash collateralized; (iv) acceleration of the maturity of outstanding indebtedness under the agreements; and/or (v) foreclosure on any collateral securing the obligations under the agreements. As of September 30, 2015, senior notes payable in the amount of $200.0 million were due to a group of institutional holders in five equal annual installments beginning in 2015 and bear interest at 6.11% per annum (“2019 Notes”). As of September 30, 2015, we were in compliance with the covenants contained in our note purchase agreement governing our 2019 Notes and the credit agreement governing the $215.0 million committed revolving credit facility, with a sublimit for letters of credit of $100.0 million, as well as the debt agreements related to our consolidated real estate entity. Granite entered into the Second Amended and Restated Credit Agreement dated October 28, 2015 (see Note 16). We have the ability and intent to draw on this amended and restated credit facility to pay the $40.0 million principal amount due on the 2019 Notes in the fourth quarter of 2015. We are not aware of any non-compliance by any of our unconsolidated real estate entities with the covenants contained in their debt agreements.

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 (i) us no longer being entitled to borrow under the agreements; (ii) termination of the agreements; (iii) the requirement that any letters of credit under the agreements be cash collateralized; (iv) acceleration of the maturity of outstanding indebtedness under the agreements; and/or (v) foreclosure on any collateral securing the obligations under the agreements.

As of September 30, 2015, senior notes payable in the amount of $200.0 million were due to a group of institutional holders in five equal annual installments beginning in 2015 and bear interest at 6.11% per annum (“2019 Notes”). As of September 30, 2015, we were in compliance with the covenants contained in our note purchase agreement governing our 2019 Notes and the credit agreement governing the $215.0 million committed revolving credit facility, with a sublimit for letters of credit of $100.0 million, as well as the debt agreements related to our consolidated real estate entity. Granite entered into the Second Amended and Restated Credit Agreement dated October 28, 2015 (see Note 16). We have the ability and intent to draw on this amended and restated credit facility to pay the $40.0 million principal amount due on the 2019 Notes in the fourth quarter of 2015. We are not aware of any non-compliance by any of our unconsolidated real estate entities with the covenants contained in their debt agreements.