Business segment information (Tables)

6 Months Ended

Jun. 30, 2017

Segment Reporting [Abstract]

Schedule of Net Sales by Reporting Segment

The table below present net sales, which includes product sales and marketing service fees, by reporting segment:

	Three Months Ended June 30,
(U.S. Dollars, in thousands)	2017		2016		Change
BioStim	$	47,174	$	44,758		5.4	%
Biologics		15,661		14,256		9.9	%
Extremity Fixation		24,747		26,817		-7.7	%
Spine Fixation		21,360		18,244		17.1	%
Net sales	$	108,942	$	104,075		4.7	%

	Six Months Ended June 30,
(U.S. Dollars, in thousands)	2017		2016		Change
BioStim	$	91,713	$	85,802		6.9	%
Biologics		30,648		28,350		8.1	%
Extremity Fixation		48,692		51,526		-5.5	%
Spine Fixation		40,627		37,076		9.6	%
Net sales	$	211,680	$	202,754		4.4	%

Summary of Non-GAAP Net Margin by Reporting Segment

The table below presents non-GAAP net margin by reporting segment:

	Three Months Ended June 30,						Six Months Ended June 30,
(U.S. Dollars, in thousands)	2017			2016			2017			2016
BioStim	$	19,469		$	18,575		$	36,602		$	34,983
Biologics		6,470			6,718			12,641			12,822
Extremity Fixation		6,766			8,161			13,178			15,336
Spine Fixation		2,696			2,201			4,703			4,536
Corporate		(107	)		(139	)		(205	)		(441	)
Non-GAAP net margin	$	35,294		$	35,516		$	66,919		$	67,236
General and administrative		20,409			18,545			38,691			35,550
Research and development		6,887			6,796			14,311			14,436
Charges related to U.S. Government resolutions		—			12,870			—			12,870
Operating income (loss)	$	7,998		$	(2,695	)	$	13,917		$	4,380
Interest income (expense), net		76			(113	)		121			(151	)
Other income (expense), net		585			147			(3,763	)		1,980
Income (loss) before income taxes	$	8,659		$	(2,661	)	$	10,275		$	6,209