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v3.6.0.2

Condensed Balance Sheets (Details 3) - USD ($) $ / shares in Units, $ in Thousands | Dec. 31, 2016 | Dec. 31, 2015 | Dec. 31, 2014 | Dec. 31, 2013
--- | --- | --- | --- | ---
Current assets: |  |  |  |  |  |
Cash and cash equivalents | $ 46,107 | $ 83,903 |  | $ 60,479 |  | $ 52,566
Receivables, net | 630,243 | 582,475 |  |  |  |
Inventories | 238,273 | 240,551 |  |  |  |
Prepayments and other current assets | 48,461 | 29,528 |  |  |  |
Total current assets | 977,475 | 991,304 |  |  |  |
Investments | 125,866 | 119,704 |  |  |  |
Property, plant and equipment | 6,510,229 | 6,387,702 |  |  |  |
Less accumulated depreciation, depletion and amortization | 2,578,902 | 2,489,322 |  | 2,385,202 |  |
Net property, plant and equipment | 3,931,327 | 3,898,380 |  | 3,520,320 |  |
Deferred charges and other assets: |  |  |  |  |  |
Goodwill | 631,791 | 635,204 | [1] | 635,204 | [1] |
Other | 415,419 | 351,603 |  |  |  |
Total deferred charges and other assets | 1,249,799 | 1,555,766 |  |  |  |
Total assets | 6,284,467 | 6,565,154 |  | 7,805,405 |  |
Current liabilities: |  |  |  |  |  |
Long-term debt due within one year | 43,598 | 238,539 |  |  |  |
Accounts payable | 279,962 | 286,061 |  |  |  |
Taxes payable | 48,164 | 46,880 |  |  |  |
Dividends payable | 37,767 | 36,784 |  |  |  |
Accrued compensation | 65,867 | 45,192 |  |  |  |
Other accrued liabilities | 184,377 | 167,322 |  |  |  |
Total current liabilities | 669,659 | 947,261 |  |  |  |
Long-term debt | 1,746,561 | 1,557,624 |  |  |  |
Deferred credits and other liabilities: |  |  |  |  |  |
Deferred income taxes | 668,226 | 663,629 |  |  |  |
Other | 883,777 | 812,342 |  |  |  |
Total deferred credits and other liabilities | 1,552,003 | 1,539,721 |  |  |  |
Commitments and contingencies (Notes 14, 16 and 17) |  |  |  |  |  |
Equity: |  |  |  |  |  |
Preferred stocks | 15,000 | 15,000 |  |  |  |
Authorized - 500,000,000 shares, $1.00 par value |  |  |  |  |  |
Issued - 195,843,297 shares in 2016 and 195,804,665 shares in 2015 | 195,843 | 195,805 |  |  |  |
Other paid-in capital | 1,232,478 | 1,230,119 |  |  |  |
Retained earnings | 912,282 | 996,355 |  |  |  |
Accumulated other comprehensive loss | (35,733) | (37,148) |  |  |  |
Treasury stock at cost - 538,921 shares | (3,626) | (3,626) |  |  |  |
Total common stockholders' equity | 2,301,244 | 2,381,505 |  |  |  |
Total stockholders' equity | 2,316,244 | 2,396,505 |  |  |  |
Total liabilities and equity | $ 6,284,467 | $ 6,565,154 |  |  |  |
Condensed Balance Sheet (Parenthetical) |  |  |  |  |  |
Common stock, shares authorized | 500,000,000 | 500,000,000 |  |  |  |
Common stock, par value | $ 1.00 | $ 1.00 |  |  |  |
Common stock, shares issued | 195,843,297 | 195,804,665 |  |  |  |
Treasury stock, shares | 538,921 | 538,921 |  |  |  |
MDU Resources Group, Inc. [Member] |  |  |  |  |  |
Current assets: |  |  |  |  |  |
Cash and cash equivalents | $ 4,159 | $ 2,921 |  | $ 6,120 |  | $ 5,051
Receivables, net | 80,467 | 70,511 |  |  |  |
Accounts receivable from subsidiaries | 34,424 | 33,129 |  |  |  |
Inventories | 17,352 | 16,883 |  |  |  |
Prepayments and other current assets | 24,531 | 7,876 |  |  |  |
Total current assets | 160,933 | 131,320 |  |  |  |
Investments | 70,370 | 66,784 |  |  |  |
Investment in subsidiaries | 1,603,874 | 1,722,351 |  |  |  |
Property, plant and equipment | 2,502,264 | 2,378,994 |  |  |  |
Less accumulated depreciation, depletion and amortization | 756,191 | 711,209 |  |  |  |
Net property, plant and equipment | 1,746,073 | 1,667,785 |  |  |  |
Deferred charges and other assets: |  |  |  |  |  |
Goodwill | 4,812 | 4,812 |  |  |  |
Other | 183,654 | 184,080 |  |  |  |
Total deferred charges and other assets | 188,466 | 188,892 |  |  |  |
Total assets | 3,769,716 | 3,777,132 |  |  |  |
Current liabilities: |  |  |  |  |  |
Long-term debt due within one year | 110 | 109 |  |  |  |
Accounts payable | 37,697 | 54,275 |  |  |  |
Accounts payable to subsidiaries | 5,592 | 6,622 |  |  |  |
Taxes payable | 14,992 | 10,995 |  |  |  |
Dividends payable | 37,767 | 36,784 |  |  |  |
Accrued compensation | 16,086 | 7,539 |  |  |  |
Other accrued liabilities | 34,929 | 40,931 |  |  |  |
Total current liabilities | 147,173 | 157,255 |  |  |  |
Long-term debt | 679,667 | 623,048 |  |  |  |
Deferred credits and other liabilities: |  |  |  |  |  |
Deferred income taxes | 270,126 | 255,069 |  |  |  |
Other | 356,506 | 345,255 |  |  |  |
Total deferred credits and other liabilities | 626,632 | 600,324 |  |  |  |
Equity: |  |  |  |  |  |
Preferred stocks | 15,000 | 15,000 |  |  |  |
Authorized - 500,000,000 shares, $1.00 par value |  |  |  |  |  |
Issued - 195,843,297 shares in 2016 and 195,804,665 shares in 2015 | 195,843 | 195,805 |  |  |  |
Other paid-in capital | 1,232,478 | 1,230,119 |  |  |  |
Retained earnings | 912,282 | 996,355 |  |  |  |
Accumulated other comprehensive loss | (35,733) | (37,148) |  |  |  |
Treasury stock at cost - 538,921 shares | (3,626) | (3,626) |  |  |  |
Total common stockholders' equity | 2,301,244 | 2,381,505 |  |  |  |
Total stockholders' equity | 2,316,244 | 2,396,505 |  |  |  |
Total liabilities and equity | $ 3,769,716 | $ 3,777,132 |  |  |  |
Condensed Balance Sheet (Parenthetical) |  |  |  |  |  |
Common stock, shares authorized | 500,000,000 | 500,000,000 |  |  |  |
Common stock, par value | $ 1.00 | $ 1.00 |  |  |  |
Common stock, shares issued | 195,843,297 | 195,804,655 |  |  |  |
Treasury stock, shares | 538,921 | 538,921 |  |  |  |
[1] | Balance is presented net of accumulated impairment of $12.3 million at the pipeline and midstream segment, which occurred in prior periods.

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- Definition The amount allocated to treasury stock. Treasury stock is common and preferred shares of an entity that were issued, repurchased by the entity, and are held in its treasury. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 30 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6405813&loc=d3e23239-112655 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.29,30) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 30 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=6405834&loc=d3e23315-112656 + Details
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