Overview and Summary of Significant Accounting Policies (Tables)

6 Months Ended

Jun. 30, 2019

The following table includes estimated revenue expected to be recognized in future periods related to performance obligations that are unsatisfied or partially satisfied as of June 30, 2019 and the percentage of the outstanding performance obligations as of June 30, 2019 expected to be delivered during the remainder of 2019:



	Unsatisfied performance obligations at June 30, 2019
	Total Amount		Percent expected to be delivered in 2019
	(in millions)
Energy Equipment Group:
Wind towers and utility structures	$	517.6	52	%
Other	$	45.3	80	%

Transportation Products Group:
Inland barges	$	349.7	54	%

All unsatisfied performance obligations beyond 2019 are expected to be delivered during 2020.