Segment Information

12 Months Ended

Dec. 31, 2017

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 are provided as follows:



	Year Ended December 31,
(in thousands)	2017			2016			2015
Revenues from external customers
U.S.	$	290,002		$	257,420		$	235,824
International	41,376			44,433			57,637
Total revenues from external customers	$	331,378		$	301,853		$	293,461

Revenues by product
DEFINITY	$	157,268		$	131,612		$	111,859
TechneLite	104,644			99,217			72,562
Xenon	31,377			29,086			48,898
Other	38,089			41,938			60,142
Total revenues	$	331,378		$	301,853		$	293,461

Geographical revenues
U.S.	$	290,002		$	257,420		$	235,824
Canada	18,770			18,918			28,340
All other	22,606			25,515			29,297
Total revenues	$	331,378		$	301,853		$	293,461

Operating income
U.S.	$	49,239		$	46,909		$	42,008
International	2,614			9,679			522
Operating income	51,853			56,588			42,530
Interest expense	18,410			26,618			38,715
Debt retirement costs	—			1,896			—
Loss on extinguishment of debt	2,442			—			15,528
Other (income) expense	(8,638		)	(220		)	65
Income (loss) before income taxes	$	39,639		$	28,294		$	(11,778	)

Depreciation and amortization
U.S.	$	17,672		$	15,995		$	17,054
International	517			1,335			1,850
Total depreciation and amortization	$	18,189		$	17,330		$	18,904



	December 31,
(in thousands)	2017		2016
Long-lived assets
U.S.	$	91,537	$	92,650
International	1,462		1,537
Total long-lived assets	$	92,999	$	94,187