v3.10.0.1
CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended
Sep. 30, 2018
Sep. 30, 2017
Sep. 30, 2018
Sep. 30, 2017
Revenues:        
Total revenues $ 490,363 $ 440,566 $ 1,452,448 $ 1,363,484
Costs and expenses:        
Operating expenses (excluding depreciation and amortization expense) 124,451 116,590 365,007 334,016
Depreciation and amortization expense 73,424 66,989 216,934 187,062
General and administrative expenses (excluding depreciation and amortization expense) 27,817 25,003 75,572 83,202
Other depreciation and amortization expense 2,276 2,189 6,645 6,581
Total costs and expenses 395,086 348,849 1,178,853 1,101,224
Operating income 95,277 91,717 273,595 262,260
Interest expense, net (44,825) (45,256) (141,533) (127,282)
Other income (expense), net 920 (5,126) 82,084 (4,898)
Income before income tax expense 51,372 41,335 214,146 130,080
Income tax expense 3,236 2,743 10,478 7,298
Net income $ 48,136 $ 38,592 $ 203,668 $ 122,782
Basic net (loss) income per common unit $ (3.49) $ 0.15 $ (2.50) $ 0.65
Basic weighted-average common units outstanding 104,264,796 93,031,320 96,920,202 87,392,597
Comprehensive income $ 53,037 $ 44,482 $ 226,872 $ 133,566
Service [Member]        
Revenues:        
Total revenues 314,512 295,102 908,056 845,264
Costs and expenses:        
Total costs associated with service revenues 197,875 183,579 581,941 521,078
Product [Member]        
Revenues:        
Total revenues 175,851 145,464 544,392 518,220
Costs and expenses:        
Total costs associated with service revenues $ 167,118 $ 138,078 $ 514,695 $ 490,363