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Consolidated Statements of Cash Flows - PNMR - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
Cash Flows From Operating Activities: |  |  |
Net Earnings | $ 211,847 | $ 187,316 | $ 92,131
Adjustments to reconcile net earnings to net cash flows from operating activities: |  |  |
Depreciation and amortization | 320,210 | 314,668 | 301,068
Deferred income tax expense (benefit) | 30,747 | 20,405 | (25,385)
(Gains) on investment securities | (16,850) | (21,599) | (29,589)
Stock based compensation expense | 9,446 | 8,141 | 6,414
Regulatory disallowances and restructuring costs | 1,194 | 1,098 | 151,095
Allowance for equity funds used during construction | (13,217) | (11,254) | (9,478)
Other, net | 5,457 | 3,497 | 2,395
Changes in certain assets and liabilities: |  |  |
Accounts receivable and unbilled revenues | (25,924) | (42,035) | 3,796
Materials, supplies, and fuel stock | 1,356 | 11,512 | (6,095)
Other current assets | 1,838 | (8,135) | 1,872
Other assets | 31,135 | 29,923 | 42,803
Accounts payable | 10,640 | 7,403 | (272)
Accrued interest and taxes | 2,692 | (9,347) | 14,691
Other current liabilities | 6,894 | 23,740 | (7,212)
Other liabilities | (29,592) | (29,633) | (35,071)
Net cash flows from operating activities | 547,873 | 485,700 | 503,163
Cash Flows From Investing Activities: |  |  |
Additions to utility and non-utility plant | (935,016) | (679,028) | (616,273)
Proceeds from sales of investment securities | 459,867 | 590,998 | 494,528
Purchases of investment securities | (477,672) | (607,591) | (513,866)
Investments in NMRD | 0 | (23,250) | (38,250)
Distributions from NMRD | 572 | 0 | 0
Other, net | (9) | (14,928) | (37)
Net cash flows used in investing activities | (952,258) | (733,799) | (673,898)
Cash Flows From Financing Activities: |  |  |
Short-term borrowings (repayments), net | 0 | 0 | (150,000)
Revolving credit facilities borrowings (repayments), net | 30,700 | (153,100) | 99,200
Long-term borrowings | 1,816,345 | 1,267,845 | 745,000
Repayment of long-term debt | (1,411,345) | (977,845) | (407,302)
Issuance of common stock | 0 | 283,208 | 0
Proceeds from stock option exercise | 0 | 24 | 943
Awards of common stock | (10,130) | (11,984) | (9,918)
Dividends paid | (112,972) | (98,502) | (92,926)
Valencia’s transactions with its owner | (19,094) | (18,056) | (15,401)
Transmission interconnection and security deposit arrangements | 80,558 | 11,452 | 10,015
Refunds paid under transmission interconnection arrangements | (10,195) | (5,905) | (4,325)
Debt issuance costs and other, net | (6,306) | (4,943) | (2,840)
Net cash flows from financing activities | 357,561 | 292,194 | 172,446
Change in Cash and Cash Equivalents | (46,824) | 44,095 | 1,711
Cash and Cash Equivalents at Beginning of Year | 47,928 | 3,833 | 2,122
Cash and Cash Equivalents at End of Year | 1,104 | 47,928 | 3,833
Supplemental Cash Flow Disclosures: |  |  |
Interest paid, net of amounts capitalized | 91,276 | 106,575 | 115,476
Income taxes paid (refunded), net | 1,042 | 969 | (2,929)
Supplemental schedule of noncash investing and financing activities: |  |  |
(Increase) decrease in accrued plant additions | 7,362 | (58,796) | 8,781
Contribution of utility plant to NMRD | $ 0 | $ 801 | $ 0

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- Definition The cash outflow associated with the purchase of or advances to an equity method investments, which are investments in joint ventures and entities in which the entity has an equity ownership interest normally of 20 to 50 percent and exercises significant influence. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 13 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=123570139&loc=d3e3213-108585 + Details
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