Note

– Goodwill and Other Intangible Assets

The changes in the carrying amount of goodwill during the

three

months ended

March 31, 2018

were as follows:


(in thousands)	Three Months Ended March 31, 2018
Balance as of the beginning of the period	$	128,504
Additions to goodwill during the period		248
Balance as of the end of the period	$	128,752

The Company adjusted goodwill by

$0.2

million during the

three

months ended

March 31, 2018

as a result of the final working capital adjustment for the acquisition of RAPID in

November 2017.

Intangible Assets other than goodwill at

March 31, 2018

and

December 31, 2017

were as follows:


	March 31, 2018							December 31, 2017							Useful			Weighted Average Useful Life
(in thousands)	Gross		Accumulated Amortization			Net		Gross		Accumulated Amortization			Net		Life (in years)			Remaining (in years)
Intangible Assets with finite lives:
Marketing assets	$	930	$	(364	)	$	566	$	930	$	(341	)	$	589		10.0			6.0
Non-compete agreement		270		(194	)		76		270		(190	)		80	2.0	-	5.0		4.8
Trade secrets		250		(196	)		54		250		(183	)		67		5.0			1.0
Trade names		1,080		(135	)		945		1,080		-			1,080		2.0			1.8
Internally developed software		680		(680	)		-		680		(680	)		-		3.0			0.0
Software technology		9,229		(206	)		9,023		8,229		-			8,229		10.0			9.8
Customer relationships		10,070		(1,415	)		8,655		10,070		(1,031	)		9,039	6.0	-	9.0		5.6
Total intangible assets	$	22,509	$	(3,190	)	$	19,319	$	21,509	$	(2,425	)	$	19,084

Amortization expense for intangible assets was

$0.8

million and

$0.2

million for the

three

months ended

March 31, 2018

and

2017,

respectively.

Estimated aggregated amortization expense based on the current carrying value of the amortizable intangible assets is as follows:


(in thousands)	Estimated Amortization Expense
Remaining 2018	$	2,379
2019		3,128
2020		2,571
2021		2,571
2022		2,571
Thereafter		6,099
Total estimated amortization expense	$	19,319