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Commitments (Tables)
12 Months Ended
Dec. 31, 2021
Risks and Uncertainties [Abstract]  
Schedule of estimated future minimum payments under purchased water supply commitments
GSWC’s estimated future minimum payments under these purchased water supply commitments at December 31, 2021 are as follows (in thousands):
2022$436 
2023436 
2024436 
2025391 
2026346 
Thereafter1,345 
Total$3,390