Discontinued Operations (Narrative) (Details) (Globetec [Member])	0 Months Ended	9 Months Ended
	Aug. 31, 2013	Sep. 30, 2014
Globetec [Member]
Discontinued Operations Disclosures [Line Items]
Discontinued operation, description		In 2012, the Company's board of directors approved a plan of sale for Globetec Construction, LLC ("Globetec"). Accordingly, Globetec's projects and assets are reflected as assets and liabilities of discontinued operations, and Globetec's results of operations are presented as discontinued operations in the condensed unaudited consolidated financial statements for all periods presented. Effective August 31, 2013, the Company sold all of its membership interests in Globetec for nominal consideration and retained certain contingent assets and liabilities.
Discontinued operation, disposal date		Aug. 31, 2013
Discontinued operation, membership interests remaining	0.00%