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Fair Value Measurements - Additional Information (Detail) - USD ($)
1 Months Ended 3 Months Ended 12 Months Ended
Apr. 30, 2024
Mar. 31, 2025
Mar. 31, 2024
Dec. 31, 2024
Jun. 30, 2023
Fair Value Measurement Inputs and Valuation Techniques [Line Items]          
Unrealized gains or losses related to cash and cash equivalents   $ 0   $ 0  
Impairment   0 $ 0    
GridBeyond [Member]          
Fair Value Measurement Inputs and Valuation Techniques [Line Items]          
Sale of investment in GridBeyond for cash $ 1,800,000        
Loss on sale of investment (172,000)        
Foreign exchange loss $ (49,000)        
Other Noncurrent Assets [Member] | Level 2          
Fair Value Measurement Inputs and Valuation Techniques [Line Items]          
Investment at fair value         $ 2,021,000
Other Noncurrent Assets [Member] | Level 3 [Member]          
Fair Value Measurement Inputs and Valuation Techniques [Line Items]          
Strategic investment   $ 2,750,000   $ 2,750,000