Segment Reporting | Segment Reporting Three Months Ended June 30, 2020 : (in thousands) Wireless Broadband Tower Corporate & Eliminations Consolidated External revenue Postpaid $ 73,269 $ — $ — $ — $ 73,269 Prepaid 12,432 — — — 12,432 Tower lease — — 1,829 — 1,829 Cable, residential and SMB (1) — 35,829 — — 35,829 Fiber, enterprise and wholesale — 5,663 — — 5,663 Rural local exchange carrier — 4,602 — — 4,602 Travel, installation, and other 24,438 1,658 — — 26,096 Service revenue and other 110,139 47,752 1,829 — 159,720 Equipment 9,610 196 — — 9,806 Total external revenue 119,749 47,948 1,829 — 169,526 Revenue from other segments — 2,185 2,430 (4,615 ) — Total revenue 119,749 50,133 4,259 (4,615 ) 169,526 Operating expenses Cost of services 33,237 20,640 1,315 (4,552 ) 50,640 Cost of goods sold 9,437 221 — — 9,658 Selling, general and administrative 9,783 9,260 238 12,113 31,394 Depreciation and amortization 23,420 11,245 477 (310 ) 34,832 Total operating expenses 75,877 41,366 2,030 7,251 126,524 Operating income (loss) $ 43,872 $ 8,767 $ 2,229 $ (11,866 ) $ 43,002 _______________________________________________________ (1) SMB refers to Small and Medium Businesses. Three Months Ended June 30, 2019 : (in thousands) Wireless Broadband Tower Corporate & Eliminations Consolidated External revenue Postpaid $ 75,997 $ — $ — $ — $ 75,997 Prepaid 13,603 — — — 13,603 Tower lease — — 1,751 — 1,751 Cable, residential and SMB — 33,581 — — 33,581 Fiber, enterprise and wholesale — 4,921 — — 4,921 Rural local exchange carrier — 5,581 — — 5,581 Travel, installation, and other 4,971 1,654 — — 6,625 Service revenue and other 94,571 45,737 1,751 — 142,059 Equipment 16,548 307 — — 16,855 Total external revenue 111,119 46,044 1,751 — 158,914 Revenue from other segments — 2,507 1,270 (3,777 ) — Total revenue 111,119 48,551 3,021 (3,777 ) 158,914 Operating expenses Cost of services 32,668 19,014 895 (3,080 ) 49,497 Cost of goods sold 15,742 131 — 1 15,874 Selling, general and administrative 10,318 7,524 274 9,054 27,170 Depreciation and amortization 31,463 10,002 756 132 42,353 Total operating expenses 90,191 36,671 1,925 6,107 134,894 Operating income (loss) $ 20,928 $ 11,880 $ 1,096 $ (9,884 ) $ 24,020 Six Months Ended June 30, 2020 : (in thousands) Wireless Broadband Tower Corporate & Eliminations Consolidated External revenue Postpaid $ 148,197 $ — $ — $ — $ 148,197 Prepaid 25,541 — — — 25,541 Tower lease — — 3,626 — 3,626 Cable, residential and SMB — 70,772 — — 70,772 Fiber, enterprise and wholesale — 11,151 — — 11,151 Rural local exchange carrier — 9,358 — — 9,358 Travel, installation, and other 27,789 3,474 — — 31,263 Service revenue and other 201,527 94,755 3,626 — 299,908 Equipment 22,360 446 — — 22,806 Total external revenue 223,887 95,201 3,626 — 322,714 Revenue from other segments — 4,718 4,363 (9,081 ) — Total revenue 223,887 99,919 7,989 (9,081 ) 322,714 Operating expenses Cost of services 66,676 39,883 2,254 (8,608 ) 100,205 Cost of goods sold 21,965 364 — — 22,329 Selling, general and administrative 19,211 18,759 764 23,651 62,385 Depreciation and amortization 48,719 22,116 947 (39 ) 71,743 Total operating expenses 156,571 81,122 3,965 15,004 256,662 Operating income (loss) $ 67,316 $ 18,797 $ 4,024 $ (24,085 ) $ 66,052 Six Months Ended June 30, 2019 : (in thousands) Wireless Broadband Tower Corporate & Eliminations Consolidated External revenue Postpaid $ 152,179 $ — $ — $ — $ 152,179 Prepaid 26,733 — — — 26,733 Tower lease — — 3,514 — 3,514 Cable, residential and SMB — 66,007 — — 66,007 Fiber, enterprise and wholesale — 9,749 — — 9,749 Rural local exchange carrier — 10,819 — — 10,819 Travel, installation, and other 12,989 3,300 — — 16,289 Service revenue and other 191,901 89,875 3,514 — 285,290 Equipment 31,839 628 — — 32,467 Total external revenue 223,740 90,503 3,514 — 317,757 Revenue from other segments — 4,929 2,540 (7,469 ) — Total revenue 223,740 95,432 6,054 (7,469 ) 317,757 Operating expenses Cost of services 65,200 38,075 1,841 (6,101 ) 99,015 Cost of goods sold 30,169 342 — — 30,511 Selling, general and administrative 21,397 15,093 557 18,845 55,892 Depreciation and amortization 61,833 19,993 1,436 270 83,532 Total operating expenses 178,599 73,503 3,834 13,014 268,950 Operating income (loss) $ 45,141 $ 21,929 $ 2,220 $ (20,483 ) $ 48,807 A reconciliation of the total of the reportable segments’ operating income to consolidated income before taxes is as follows: Three Months Ended Six Months Ended (in thousands) 2020 2019 2020 2019 Total consolidated operating income $ 43,002 $ 24,020 $ 66,052 $ 48,807 Interest expense (5,044 ) (7,522 ) (11,255 ) (15,476 ) Other 1,573 1,176 2,306 2,463 Income before income taxes $ 39,531 $ 17,674 $ 57,103 $ 35,794 |