Goodwill and Other Intangibles (Tables)

12 Months Ended

Aug. 31, 2019

Goodwill and Other Intangibles

Schedule of changes in the carrying value of goodwill

	Adhesives, Sealants and Additives		Industrial Tapes		Corrosion Protection and Waterproofing		Consolidated
Balance at August 31, 2017	$	18,646	$	21,445	$	10,693	$	50,784
Acquisition of Zappa Stewart		34,138		—		—		34,138
Sale of the structural composites rod business		—		(230)		—		(230)
Foreign currency translation adjustment		3		—		1		4
Balance at August 31, 2018	$	52,787	$	21,215	$	10,694	$	84,696
Loss on impairment of polyurethane dispersions business		(2,410)		—		—		(2,410)
Foreign currency translation adjustment		(287)		—		(13)		(300)
Balance at August 31, 2019	$	50,090	$	21,215	$	10,681	$	81,986

Schedule of intangible assets subject to amortization

	Weighted Average		Gross Carrying		Accumulated		Net Carrying
	Amortization Period		Value		Amortization		Value
August 31, 2019
Patents and agreements	14.6	years	$	1,760	$	1,693	$	67
Formulas and technology	7.8	years		10,164		7,969		2,195
Trade names	5.8	years		8,503		7,261		1,242
Customer lists and relationships	9.1	years		98,139		48,939		49,200
			$	118,566	$	65,862	$	52,704
August 31, 2018
Patents and agreements	14.4	years	$	1,863	$	1,681	$	182
Formulas and technology	7.8	years		10,225		6,690		3,535
Trade names	5.8	years		8,554		6,866		1,688
Customer lists and relationships	9.1	years		98,727		38,802		59,925
			$	119,369	$	54,039	$	65,330

Schedule of estimated amortization expense

Years ending August 31,
2020	11,555
2021	11,026
2022	10,023
2023	6,768
2024	5,659