4. Intangible Assets and Goodwill

The following table presents details of our intangible assets, estimated lives and related accumulated amortization (in thousands):


	As of May 25, 2019						As of May 26, 2018
			Accumulated						Accumulated
	Gross		Amortization		Net		Gross		Amortization		Net

Customer contracts and relationships (3-8 years)	$	14,495	$	(3,439)	$	11,056	$	14,565	$	(1,263)	$	13,302
Tradenames (3-10 years)		4,407		(1,563)		2,844		4,481		(560)		3,921
Consultant list (3 years)		783		(462)		321		815		(205)		610
Non-compete agreements (3 years)		896		(528)		368		932		(234)		698
Total	$	20,581	$	(5,992)	$	14,589	$	20,793	$	(2,262)	$	18,531

The weighted-average useful lives of the customer contracts and relationships and other are approximately 5.2 and 1.5 years, respectively.

The following table summarizes amortization expense for the years stated (in thousands):

The following table presents future estimated amortization expense based on existing intangible assets for the years presented (in thousands):



	Fiscal Years Ending
		2020		2021		2022		2023		2024
Expected amortization expense	$	3,770	$	2,484	$	1,778	$	1,778	$	1,778

The following table summarizes the activity in the Company’s goodwill balance (in thousands):



	For the Years Ended
	May 25,		May 26,
	2019		2018
Goodwill, beginning of year	$	191,950	$	171,088
Acquisitions-taskforce (see Note 3)		-		8,749
Acquisitions-Accretive (see Note 3)		-		11,525
Impact of foreign currency exchange rate changes		(1,135)		588
Goodwill, end of period	$	190,815	$	191,950