
	Contractor Solutions		Specialized Reliability Solutions		Engineered Building Solutions		Total
Balance at April 1, 2023	$	209,160	$	9,278	$	24,302	$	242,740
CG and ACG acquisitions	107		—		—		107
Dust Free acquisition	3,951		—		—		3,951
Falcon acquisition	85		—		—		85
Other acquisitions	261		—		—		261
Currency translation	(20)		80		(13)		46
Balance at March 31, 2024	$	213,544	$	9,358	$	24,289	$	247,191
Dust Free acquisition	(212)		—		—		(212)
PSP acquisition	7,323		—		—		7,323
PF WaterWorks acquisition	10,258		—		—		10,258
Currency translation	(33)		79		(514)		(468)
Balance at March 31, 2025	$	230,880	$	9,437	$	23,775	$	264,092

The following table provides information about our intangible assets for the years ended March 31, 2025 and 2024 (in thousands, except years):


		March 31, 2025				March 31, 2024
	Wtd Avg Life (Years)	Gross Amount		Accumulated Amortization		Gross Amount		Accumulated Amortization
Finite-lived intangible assets:
Patents	10	$	17,784	$	(10,189)	$	15,084	$	(9,306)
Customer lists and amortized trademarks	15	402,765		(127,551)		346,136		(103,407)
Non-compete agreements	6	1,000		(639)		1,000		(453)
Other	10	6,277		(3,141)		6,275		(2,649)
		$	427,826	$	(141,520)	$	368,495	$	(115,815)
Trade names and trademarks not being amortized (a):		$	71,604	$	—	$	66,139	$	—

(a) During the fiscal quarter ended March 31, 2024, we recorded a $1.5 million impairment relating to a trademark, included in selling, general and administrative expenses, for our Contractor Solutions segment.

Amortization expense for the years ended March 31, 2025, 2024 and 2023 was $26.3 million, $22.9 million and $22.1 million, respectively. The following table presents the estimated future amortization of finite-lived intangible assets for the next five fiscal years ending March 31 (in thousands):