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Goodwill and Other Intangible Assets (Tables)
 12 Months Ended
Jun. 30, 2024
Goodwill and Intangible Assets Disclosure [Abstract]  
Carrying value of goodwill by segment
The changes in the carrying amount of goodwill by segment are as follows:
Storage and Terminal
Solutions		Utility and Power
Infrastructure		Process and Industrial FacilitiesTotal
 (In thousands)
Net balance at June 30, 2021$26,774 $6,984 $26,878 $60,636 
Goodwill impairment(7,208)(2,659)(8,445)(18,312)
Translation adjustment (1)
(121)(62)(6)(189)
Net balance at June 30, 202219,445 4,263 18,427 42,135 
Goodwill impairment— — (12,316)(12,316)
Disposal of business(2)
— — (627)(627)
Translation adjustment(1)
(48)(24)— (72)
Net balance at June 30, 202319,397 4,239 5,484 29,120 
Translation adjustment(1)
(64)(33)— (97)
Net balance at June 30, 2024$19,333 $4,206 $5,484 $29,023 
(1)The translation adjustments relate to the periodic translation of Canadian Dollar and South Korean Won denominated goodwill recorded as a part of prior acquisitions in Canada and South Korea, in which the local currency was determined to be the functional currency.
(2)We sold our industrial cleaning business during the fourth quarter of fiscal 2023, which resulted in the allocation $0.6 million of goodwill to net assets sold in the transaction. See Note 3 - Property, Plant and Equipment, Industrial Cleaning Disposal, for more information.
Carrying value of other intangible assets
Information on the carrying value of other intangible assets is as follows: 
  At June 30, 2024
 Useful LifeGross
Carrying
Amount		Accumulated
Amortization		Net Carrying
Amount
 (Years)(In thousands)
Intellectual property10$130 $(109)$21 
Customer based(1)
9 to 1511,144 (9,514)1,630 
Total other intangible assets$11,274 $(9,623)$1,651 
(1)Intangible assets have been adjusted in fiscal 2024 to remove $4.4 million of intangible assets that have been fully amortized.
  At June 30, 2023
 Useful LifeGross
Carrying
Amount		Accumulated
Amortization		Net Carrying
Amount
 (Years)(In thousands)
Intellectual property10 to 15$2,483 $(2,371)$112 
Customer based(1)
6 to 1513,144 (10,190)2,954 
Total other intangible assets$15,627 $(12,561)$3,066 
(1)Customer-based intangible assets have been adjusted in fiscal 2023 to remove $4.2 million of intangible assets that have been fully amortized.
Schedule of Finite-Lived Intangible Assets, Future Amortization Expense
We estimate that future amortization of other intangible assets will be as follows (in thousands):
For year ending:
June 30, 2025$1,096 
June 30, 2026555 
Total estimated amortization expense$1,651