Note 4 - Intangible Assets and Goodwill

3 Months Ended

Mar. 31, 2019

Notes to Financial Statements

Goodwill and Intangible Assets Disclosure [Text Block]

4. Intangible Assets and Goodwill

Intangible assets consisted of the following (

in thousands, except for weighted average amortization period

):

		Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount	Weighted Average Amortization Period in Years
March 31, 2019
Customer relationships	$	68,290	$	(17,588	)	$	50,702	12.7
Intellectual property		21,700		(7,638	)		14,062	3.9
Trade names		136		(117	)		19	0.4
Restrictive covenants		133		(115	)		18	0.4
Total	$	90,259	$	(25,458	)	$	64,801

		Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount	Weighted Average Amortization Period in Years
December 31, 2018
Customer relationships	$	156,790	$	(104,740	)	$	52,050	12.8
Intellectual property		21,700		(6,670	)		15,030	4.1
Trade names		16,246		(16,215	)		31	0.7
Restrictive covenants		263		(234	)		29	0.7
Total	$	194,999	$	(127,859	)	$	67,140

Amortization expense of intangible assets is expected to approximate the following

(in thousands):

Year ending December 31,	Amortization
2019 (excluding the three months ended March 31, 2019)	$	6,856
2020		7,664
2021		7,197
2022		7,197
2023		4,822
Thereafter		31,065
Total	$	64,801

For the

three

months ended

March 31, 2019

and

2018,

amortization expense related to intangible assets was

$2.3

million and

$6.1

million, respectively.

There was

no

change in the carrying amount of goodwill for the

three

months ended

March 31, 2019.