INVENTORIES (Details) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012
Inventory Disclosure [Abstract]
Raw materials	$ 23,669	$ 22,082
Building materials for resale	2,053	1,645
Precast finished goods	11	0
Other	1,157	1,274
Total inventory	$ 26,890	$ 25,001