LEGAL MATTERS (Details) - PPS Engineers, Inc. claims lawsuit - Pending Litigation $ in Millions	Mar. 04, 2016 USD ($)	Feb. 01, 2016 USD ($) project
Loss Contingencies
Amount of damages sought by plaintiff		$ 2.3
Number of significant project locations involved in the lawsuit | project		1
Damages sought against bond of the project		$ 2.5
Counter claim amount sought	$ 2.2