Revenue (Tables)

3 Months Ended

Dec. 31, 2019

Revenue from Contract with Customer [Abstract]

Summary of Contract Asset and Liabilities

Contract assets and liabilities as of December 31, 2019 and September 30, 2019 are summarized below (in thousands):

	December 31, 2019			September 30, 2019
Contract assets	$	60,296		$	55,374
Contract liabilities	(77,556		)	(71,464		)
Net contract asset (liability)	$	(17,260	)	$	(16,090	)

Disaggregation of Revenue

The following tables present our disaggregated revenue by geographic destination and market sector for the three months ended December 31, 2019 and 2018 (in thousands):

	Three months ended December 31, 2019		Three months ended December 31, 2018
United States	$	107,078	$	89,898
Canada	14,454		9,715
Europe, Middle East and Africa	10,166		5,441
Asia/Pacific	1,686		3,744
Mexico, Central and South America	766		553
Total revenues by geographic destination	$	134,150	$	109,351

	Three months ended December 31, 2019		Three months ended December 31, 2018
Oil and gas	$	59,994	$	49,576
Petrochemical	30,426		19,778
Electric utility	23,015		19,258
Traction power	8,351		5,009
All others	12,364		15,730
Total revenues by market sector	$	134,150	$	109,351