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Consolidated Statements of Changes in Common Stockholder's Equity - TNMP - USD ($)
$ in Thousands
Total
TNMP
TNMP
Common Stock
TNMP
Paid-in Capital
TNMP
Retained Earnings
Beginning balance at Dec. 31, 2021   $ 941,557 $ 64 $ 737,166 $ 204,327
Increase (Decrease) in Stockholders' Equity [Roll Forward]          
Net earnings   92,267     92,267
Equity contribution from parent   68,000   68,000  
Ending balance at Dec. 31, 2022   1,101,824 64 805,166 296,594
Increase (Decrease) in Stockholders' Equity [Roll Forward]          
Net earnings   94,937     94,937
Equity contribution from parent   40,900   40,900  
Ending balance at Dec. 31, 2023 $ 2,349,093 1,237,661 64 846,066 391,531
Increase (Decrease) in Stockholders' Equity [Roll Forward]          
Net earnings   103,528     103,528
Equity contribution from parent   24,000   24,000  
Ending balance at Dec. 31, 2024 $ 2,536,385 $ 1,365,189 $ 64 $ 870,066 $ 495,059