Note 4 - Acquisition-related Items

12 Months Ended

Dec. 31, 2018

Notes to Financial Statements

Business Combination Disclosure Acquisition Related Items [Text Block]

4. Acquisition-related items

Acquisition-related expense comprises the following:

	2018		2017
Transaction costs	$	11,747	$	6,247
Contingent consideration fair value adjustments		1,675		1,054
Contingent consideration compensation expense		8,553		7,626
	$	21,975	$	14,927

Contingent consideration compensation expense and contingent consideration fair value adjustments relate to acquisitions made in the current year as well as the preceding

four

years.