Commitments, Contingencies and Guarantees (Tables)

12 Months Ended

Dec. 31, 2012

Commitments and Contingencies Disclosure [Abstract]

Schedule of Future Minimum Rental Payments for Operating Leases

Leases: Minimum rental commitments and minimum royalty requirements under all noncancellable operating leases, primarily quarry property, in effect at December 31, 2012 were (in thousands):

Years Ending December 31,
2013	$	6,983
2014	5,884
2015	4,582
2016	4,025
2017	2,935
Later years (through 2099)	11,879
Total	$	36,288