Segment Information

3 Months Ended

Mar. 31, 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 March 31,
(in thousands)	2019			2018
Revenues from external customers
U.S.	$	75,434		$	71,488
International	11,076			11,142
Total revenues from external customers	$	86,510		$	82,630
Operating income
U.S.	$	14,584		$	14,156
International	1,585			981
Total operating income	16,169			15,137
Interest expense	4,592			4,050
Other income	(1,187		)	(920		)
Income before income taxes	$	12,764		$	12,007