CONSOLIDATED CONDENSED STATEMENTS OF OPERATIONS (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
CONSOLIDATED CONDENSED STATEMENTS OF OPERATIONS
Revenues	$ 1,084,510	$ 1,053,065	$ 2,039,743	$ 2,045,993
Cost of operations	954,979	947,110	1,804,865	1,839,681
Gross profit	129,531	105,955	234,878	206,312
General and administrative expenses	64,088	66,481	127,938	130,759
INCOME FROM CONSTRUCTION OPERATIONS	65,443	39,474	106,940	75,553
Other (expense) income, net	(6,974)	(3,234)	(10,347)	(4,061)
Interest expense	(10,857)	(11,083)	(21,688)	(22,419)
Income before income taxes	47,612	25,157	74,905	49,073
Provision for income taxes	(19,067)	(9,679)	(30,421)	(18,795)
NET INCOME	$ 28,545	$ 15,478	$ 44,484	$ 30,278
BASIC EARNINGS PER COMMON SHARE (in dollars per share)	$ 0.59	$ 0.32	$ 0.92	$ 0.64
DILUTED EARNINGS PER COMMON SHARE (in dollars per share)	$ 0.58	$ 0.32	$ 0.91	$ 0.62
WEIGHTED AVERAGE COMMON SHARES OUTSTANDING:
BASIC (in shares)	48,543	47,684	48,492	47,622
Effect of dilutive stock options and restricted stock units (in shares)	510	914	500	934
DILUTED (in shares)	49,053	48,598	48,992	48,556