v3.26.3
GOODWILL AND OTHER INTANGIBLE ASSETS (Tables)
 9 Months Ended
Sep. 30, 2026
Intangible Asset, Goodwill and Other [Abstract]  
Goodwill
Changes in the carrying amount of goodwill consisted of the following:
Industrial OperationsEnergy OperationsManufacturing OperationsTotal
(In thousands)
Balance at December 31, 2025$7,541 $1,449 $16,800 $25,790 
Effect of foreign currency translation— — (184)(184)
Impairment losses— — — — 
Balance at September 30, 2026$7,541 $1,449 $16,616 $25,606 
Intangible Asset, Finite-Lived
Other intangible assets, net consisted of the following:
September 30, 2026
Weighted Average Amortization PeriodGross Carrying AmountAccumulated AmortizationNet Book Value
(In thousands)
Patents:
Intellectual property operations5 years$368,153 $(359,393)$8,760 
Industrial operations7 years3,400 (2,419)981 
Total patents371,553 (361,812)9,741 
Customer relationships:
Industrial operations7 years5,300 (3,771)1,529 
Manufacturing operations15 years21,814 (2,770)19,044 
Total customer relationships27,114 (6,541)20,573 
Trade name and trademarks:
Industrial operations7 years3,430 (2,440)990 
Manufacturing operations10 years194 (78)116 
Manufacturing operationsIndefinite8,316 — 8,316 
Total trade name and trademarks11,940 (2,518)9,422 
Developed technology - manufacturing operations10 years1,000 (195)805 
Favorable leases - manufacturing operations1.9 years419 (266)153 
Total$412,026 $(371,332)$40,694 
December 31, 2025
Weighted Average Amortization PeriodGross Carrying AmountAccumulated AmortizationNet Book Value
(In thousands)
Patents:
Intellectual property operations5 years$366,402 $(352,713)$13,689 
Industrial operations7 years3,400 (2,055)1,345 
Total patents369,802 (354,768)15,034 
Customer relationships:
Industrial operations7 years5,300 (3,203)2,097 
Manufacturing operations15 years21,830 (1,702)20,128 
Total customer relationships27,130 (4,905)22,225 
Trade name and trademarks:
Industrial operations7 years3,430 (2,072)1,358 
Manufacturing operations10 years401 (49)352 
Manufacturing operationsIndefinite8,043 — 8,043 
Total trade name and trademarks11,874 (2,121)9,753 
Developed technology - manufacturing operations10 years1,000 (120)880 
Favorable leases - manufacturing operations1.9 years705 (449)256 
Total$410,511 $(362,363)$48,148 
Intangible Asset, Finite-Lived, and Capitalized Cost, Software to be Sold, Leased, or Marketed, Estimated Amortization Expense
The following table presents the scheduled annual aggregate amortization expense (in thousands):
Years Ending December 31,
Remainder of 2026$2,330 
20279,302 
20284,405 
20291,611 
20301,611 
20311,611 
Thereafter11,508 
Total$32,378