Business Segment Information - Schedule of Net Sales by Reporting Segment (Detail) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Segment Reporting Information [Line Items]
Net Sales	$ 121,078	$ 111,708	$ 111,547	$ 108,709	$ 116,896	$ 105,247	$ 108,942	$ 102,738	$ 453,042	$ 433,823	$ 409,788
Percent of Total Net Sales									100.00%	100.00%	100.00%
Bone Growth Therapies [Member]
Segment Reporting Information [Line Items]
Net Sales									$ 195,252	$ 185,900	$ 176,561
Percent of Total Net Sales									43.10%	42.90%	43.10%
Spinal Implants [Member]
Segment Reporting Information [Line Items]
Net Sales									$ 91,658	$ 81,957	$ 72,632
Percent of Total Net Sales									20.20%	18.90%	17.70%
Biologics [Member]
Segment Reporting Information [Line Items]
Net Sales									$ 59,684	$ 62,724	$ 57,912
Percent of Total Net Sales									13.20%	14.40%	14.10%
Orthofix Extremities [Member]
Segment Reporting Information [Line Items]
Net Sales									$ 106,448	$ 103,242	$ 102,683
Percent of Total Net Sales									23.50%	23.80%	25.10%