CONSOLIDATED CONDENSED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
CONSOLIDATED CONDENSED STATEMENTS OF OPERATIONS
Revenues	$ 1,312,438	$ 1,084,510	$ 2,378,903	$ 2,039,743
Cost of operations	1,213,818	954,979	2,189,524	1,804,865
Gross profit	98,620	129,531	189,379	234,878
General and administrative expenses	67,739	64,088	138,414	127,938
INCOME FROM CONSTRUCTION OPERATIONS	30,881	65,443	50,965	106,940
Other income (expense), net	100	(6,974)	(655)	(10,347)
Interest expense	(10,989)	(10,857)	(22,113)	(21,688)
Income before income taxes	19,992	47,612	28,197	74,905
Provision for income taxes	(8,215)	(19,067)	(11,294)	(30,421)
NET INCOME	$ 11,777	$ 28,545	$ 16,903	$ 44,484
BASIC EARNINGS PER COMMON SHARE (in dollars per share)	$ 0.24	$ 0.59	$ 0.35	$ 0.92
DILUTED EARNINGS PER COMMON SHARE (in dollars per share)	$ 0.24	$ 0.58	$ 0.34	$ 0.91
WEIGHTED AVERAGE COMMON SHARES OUTSTANDING:
BASIC (in shares)	49,028	48,543	48,890	48,492
Effect of dilutive stock options and restricted stock units (in shares)	800	510	798	500
DILUTED (in shares)	49,828	49,053	49,688	48,992