CONSOLIDATED CONDENSED STATEMENTS OF OPERATIONS (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
CONSOLIDATED CONDENSED STATEMENTS OF OPERATIONS
Revenues	$ 1,250,689	$ 1,030,388	$ 3,290,432	$ 3,076,381
Cost of operations	1,109,848	909,531	2,914,713	2,749,212
Gross profit	140,841	120,857	375,719	327,169
General and administrative expenses	70,487	62,763	198,425	193,522
INCOME FROM CONSTRUCTION OPERATIONS	70,354	58,094	177,294	133,647
Other (expense) income, net	(441)	(9,488)	(10,788)	(13,549)
Interest expense	(11,297)	(11,571)	(32,985)	(33,990)
Income before income taxes	58,616	37,035	133,521	86,108
Provision for income taxes	(22,886)	(13,276)	(53,307)	(32,071)
NET INCOME	$ 35,730	$ 23,759	$ 80,214	$ 54,037
BASIC EARNINGS PER COMMON SHARE (in dollars per share)	$ 0.74	$ 0.50	$ 1.65	$ 1.13
DILUTED EARNINGS PER COMMON SHARE (in dollars per share)	$ 0.73	$ 0.49	$ 1.64	$ 1.11
WEIGHTED AVERAGE COMMON SHARES
BASIC (in shares)	48,588	47,959	48,525	47,735
Effect of dilutive stock options and restricted stock units (in shares)	487	666	495	802
DILUTED (in shares)	49,075	48,625	49,020	48,537