BUSINESS SEGMENTS (Tables)

3 Months Ended

Mar. 31, 2019

Segment information is as follows:



	Three months ended March 31,
	2019			2018
Operating income (loss)
DynaEnergetics	$	23,110		$	8,720
NobelClad	1,830			(12		)
Segment operating income	24,940			8,708

Unallocated corporate expenses	(3,317		)	(2,688		)
Stock-based compensation	(1,171		)	(708		)
Other expense, net	(21		)	(377		)
Interest expense, net	(373		)	(465		)
Income before income taxes	$	20,058		$	4,470



	Three months ended March 31,
	2019		2018
Depreciation and amortization
DynaEnergetics	$	1,399	$	1,559
NobelClad	797		816
Segment depreciation and amortization	$	2,196	$	2,375

The disaggregation of revenue earned from contracts with customers based on the geographic location of the customer is as follows.