GOODWILL AND INTANGIBLE ASSETS
The changes in the carrying amount of goodwill for the years ended March 31, 2025 and 2024 were as follows (in thousands):
Contractor SolutionsSpecialized Reliability SolutionsEngineered Building SolutionsTotal
Balance at April 1, 2023$209,160 $9,278 $24,302 $242,740 
CG and ACG acquisitions107 — — 107 
Dust Free acquisition3,951 — — 3,951 
Falcon acquisition85 — — 85 
Other acquisitions261 — — 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 acquisition7,323 — — 7,323 
PF WaterWorks acquisition10,258 — — 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, 2025March 31, 2024
Wtd Avg Life (Years) Gross AmountAccumulated Amortization Gross AmountAccumulated Amortization
Finite-lived intangible assets:
Patents10$17,784 $(10,189)$15,084 $(9,306)
Customer lists and amortized trademarks15402,765 (127,551)346,136 (103,407)
Non-compete agreements61,000 (639)1,000 (453)
Other106,277 (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):
2026$27,165 
202726,104 
202825,712 
202925,636 
203025,570 
Thereafter156,119 
Total$286,306 

About Goodwill & Intangibles Disclosures

Goodwill and intangible asset disclosures reveal the premium paid in acquisitions and how management assesses whether that premium retains its value. Since goodwill is no longer amortized under US GAAP, the annual impairment test is the only mechanism that adjusts carrying values downward — making the assumptions behind that test critically important for investors.

Key signals: a history of goodwill impairments suggests management consistently overpays for acquisitions. Watch the gap between reporting unit fair value and carrying amount — when fair value exceeds carrying amount by less than 10-20%, a small decline in business performance could trigger a write-down. For finite-lived intangibles, examine useful life assumptions across customer relationships, technology, and trade names; aggressive estimates inflate near-term earnings. Compare total intangibles-to-total-assets ratios against peers to assess acquisition dependency. Rising goodwill as a percentage of equity can signal balance sheet fragility.