Consolidated Balance Sheets - PNM (Parenthetical) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Current Assets:
Allowance for uncollectible accounts	$ 7,265	$ 8,333
Utility Plant:
Accumulated depreciation, nuclear fuel	$ 41,181	$ 41,367
Company common stockholders’ equity:
Common stock, no par value (in dollars per share)	$ 0	$ 0
Common stock, shares authorized (in shares)	120,000,000	120,000,000
Common stock, shares outstanding (in shares)	85,834,874	85,834,874
Public Service Company of New Mexico
Current Assets:
Allowance for uncollectible accounts	$ 7,265	$ 8,333
Utility Plant:
Accumulated depreciation, nuclear fuel	$ 41,181	$ 41,367
Deferred Credits and Other Liabilities:
Cumulative preferred stock of subsidiary, stated value (in dollars per share)	$ 100	$ 100
Cumulative preferred stock of subsidiary, shares authorized (in shares)	10,000,000	10,000,000
Cumulative preferred stock of subsidiary, shares issued (in shares)	115,293	115,293
Company common stockholders’ equity:
Common stock, no par value (in dollars per share)	$ 0	$ 0
Common stock, shares authorized (in shares)	40,000,000	40,000,000
Common stock, shares issued (in shares)	39,117,799	39,117,799
Common stock, shares outstanding (in shares)	39,117,799	39,117,799