XML 33 R21.htm IDEA: XBRL DOCUMENT

Related Party Transactions	6 Months Ended
Related Party Transactions	Jun. 30, 2017
Related Party Transactions [Abstract]
Related Party Transactions	(15) Related Party Transactions Raymond R. Oneglia, Vice Chairman of O&G Industries, Inc. (“O&G”), is a director of the Company. The Company occasionally forms construction project joint ventures with O&G, and for certain joint ventures O&G provides equipment and services for the projects on customary trade terms. Currently, the Company has two joint ventures with O&G for infrastructure projects in the northeastern United States that are 99% and 100% complete. In addition, we have a 75% interest in a newly formed joint venture with O&G (as the 25% interest holder) for a project in Los Angeles, California. The payments made by the joint ventures to O&G during the three and six months ended June 30, 2017 and 2016 were immaterial.