Segment Information

9 Months Ended

Sep. 30, 2019

The Company reports two operating segments, U.S. and International, based on geographic customer base. The results of these operating segments are regularly reviewed by the Company’s chief operating decision maker, the President and Chief Executive Officer. The Company’s segments derive revenues through the manufacture, marketing, selling and distribution of medical imaging products, focused primarily on cardiovascular diagnostic imaging. All goodwill has been allocated to the U.S. operating segment. The Company does not identify or allocate assets to its segments.

Selected information regarding the Company’s segments is provided as follows:



	Three Months Ended September 30,					Nine Months Ended September 30,
(in thousands)	2019		2018			2019			2018
Revenues from external customers
U.S.	$	74,650	$	70,255		$	225,274		$	215,829
International	11,126		18,645			32,717			41,274
Total revenues from external customers	$	85,776	$	88,900		$	257,991		$	257,103
Operating income
U.S.	$	6,389	$	12,897		$	33,662		$	41,345
International	2,128		3,585			5,561			6,200
Total operating income	8,517		16,482			39,223			47,545
Interest expense	2,356		4,446			11,491			12,794
Loss on extinguishment of debt	—		—			3,196			—
Other expense (income)	804		(799		)	(1,695		)	(2,055		)
Income before income taxes	$	5,357	$	12,835		$	26,231		$	36,806