Fair Value Measurements (Tables)

9 Months Ended

Sep. 30, 2018

Fair Value Disclosures [Abstract]

Rollforward of the Fair Value as Determined by Level 3

The following table provides a rollforward of the fair value of these liabilities, as determined by Level 3 unobservable inputs including management’s forecast of future revenues for these acquired businesses, as well as, in the case of the Restore Flow allograft acquisition, management’s estimate of the likelihood of continued employment of certain retained employees.

	Nine months ended September 30,
	2018			2017
	(in thousands)
Beginning balance	$	1,301		$	1,320
Additions		—			—
Payments		(1,171	)		(90	)
Change in fair value included in earnings		(24	)		72
Ending balance	$	106		$	1,302