Schedule of Quarterly Financial Information [Table Text Block] | 23. Quarterly Financial Information (Unaudited) The quarterly condensed financial data for the years ended December 31, 2015 and 2014 is presented below. Due to the TexNew Mex Pipeline Acquisition , we have adjusted retrospectively the quarterly information contained herein to include the historical results of the TexNew Mex Pipeline System acquired prior to the effective date of the TexNew Mex Pipeline Acquisition . Year Ended December 31, 2015 Quarter First Second Third Fourth (Unaudited) (In thousands, except per unit data) Total revenues $ 607,396 $ 735,904 $ 680,670 $ 575,897 Total operating costs and expenses 589,835 714,873 654,305 554,141 Operating income 17,561 21,031 26,365 21,756 Net income 13,411 14,653 20,174 15,387 Net income attributable to limited partners $ 15,323 $ 15,915 $ 16,493 $ 14,842 Net income per limited partner unit: Common - basic $ 0.33 $ 0.34 $ 0.35 $ 0.30 Common - diluted 0.33 0.34 0.35 0.30 Subordinated - basic and diluted 0.33 0.34 0.35 0.29 Weighted average limited partner units outstanding: Common - basic 23,985 24,017 24,017 24,314 Common - diluted 23,996 24,051 24,024 24,321 Subordinated - basic and diluted 22,811 22,811 22,811 22,811 Year Ended December 31, 2014 Quarter First Second Third Fourth (Unaudited) (In thousands, except per unit data) Total revenues $ 864,610 $ 970,337 $ 915,719 $ 751,222 Total operating costs and expenses 848,967 953,914 899,864 728,848 Operating income 15,643 16,423 15,855 22,374 Net income 15,206 16,012 15,390 20,988 Net income attributable to limited partners $ 10,933 $ 10,975 $ 12,265 $ 18,819 Net income per limited partner unit: Common - basic $ 0.24 $ 0.24 $ 0.27 $ 0.40 Common - diluted 0.24 0.24 0.27 0.40 Subordinated - basic and diluted 0.24 0.24 0.27 0.40 Weighted average limited partner units outstanding: Common - basic 22,811 22,811 22,811 23,795 Common - diluted 22,815 22,861 22,883 23,861 Subordinated - basic and diluted 22,811 22,811 22,811 22,811 The following tables reconciles the retrospectively adjusted quarterly information to the financial data filed with the SEC. Year Ended December 31, 2015 Quarter First Second Third (Unaudited) (In thousands) Total revenues (1) $ 607,396 $ 734,501 $ 674,479 Total revenues (2) — 1,403 6,191 Total revenues $ 607,396 $ 735,904 $ 680,670 Total operating costs and expenses (1) $ 587,923 $ 712,208 $ 651,795 Total operating costs and expenses (2) 1,912 2,665 2,510 Total operating costs and expenses $ 589,835 $ 714,873 $ 654,305 Operating income (1) $ 19,473 $ 22,293 $ 22,684 Operating income (loss) (2) (1,912 ) (1,262 ) 3,681 Operating income $ 17,561 $ 21,031 $ 26,365 Net income (1) $ 15,323 $ 15,915 $ 16,493 Net income (loss) (2) (1,912 ) (1,262 ) 3,681 Net income $ 13,411 $ 14,653 $ 20,174 Year Ended December 31, 2014 Quarter First Second Third Fourth (Unaudited) (In thousands) Total revenues (1) $ 864,610 $ 970,337 $ 915,719 $ 751,222 Total revenues (2) — — — — Total revenues $ 864,610 $ 970,337 $ 915,719 $ 751,222 Total operating costs and expenses (1) $ 847,849 $ 952,863 $ 899,000 $ 727,674 Total operating costs and expenses (2) 1,118 1,051 864 1,174 Total operating costs and expenses $ 848,967 $ 953,914 $ 899,864 $ 728,848 Operating income (1) $ 16,761 $ 17,474 $ 16,719 $ 23,548 Operating income (loss) (2) (1,118 ) (1,051 ) (864 ) (1,174 ) Operating income $ 15,643 $ 16,423 $ 15,855 $ 22,374 Net income (1) $ 16,324 $ 17,060 $ 16,250 $ 22,159 Net loss (2) (1,118 ) (1,048 ) (860 ) (1,171 ) Net income $ 15,206 $ 16,012 $ 15,390 $ 20,988 (1) This financial data was filed with the SEC in our Quarterly Report on Form 10-Q or Annual Report on Form 10-K. (2) This financial data is the historical results of the TexNew Mex Pipeline System assets. See Note 1, Organization and Basis of Presentation , for further discussion of our retrospective adjustments for the TexNew Mex Pipeline Acquisition . |