Goodwill and Intangible Assets (Details) (USD $)	3 Months Ended	6 Months Ended
	Jun. 30, 2014	Jun. 30, 2014	Dec. 31, 2013	Dec. 31, 2012
Goodwill
Balance at beginning of period		$ 577,756,000		$ 1,065,741,000
Accumulated Impairment			(487,985,000)
Goodwill recorded in connection with an acquisition		7,250,000
Balance at end of period	585,006,000	585,006,000		1,065,741,000
Acquisition related adjustments	7,300,000
Civil
Goodwill
Balance at beginning of period		374,153,000		429,893,000
Accumulated Impairment			(55,740,000)
Goodwill redistribution in connection with reorganization		41,205,000
Balance at end of period	415,358,000	415,358,000		429,893,000
Building
Goodwill
Balance at beginning of period		10,502,000		420,267,000
Accumulated Impairment			(409,765,000)
Goodwill redistribution in connection with reorganization		2,953,000
Balance at end of period	13,455,000	13,455,000		420,267,000
Specialty Contractors
Goodwill
Balance at beginning of period		148,943,000		148,943,000
Goodwill recorded in connection with an acquisition		7,250,000
Balance at end of period	156,193,000	156,193,000		148,943,000
Management Services
Goodwill
Balance at beginning of period		44,158,000		66,638,000
Accumulated Impairment			(22,480,000)
Goodwill redistribution in connection with reorganization		(44,158,000)
Balance at end of period				$ 66,638,000