v3.8.0.1
CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($)
$ in Thousands
 3 Months Ended
Mar. 31, 2018
Mar. 31, 2017
Revenues:    
Service revenues $ 291,413 $ 266,462
Product sales 184,468 220,968
Total revenues 475,881 487,430
Costs and expenses:    
Operating expenses (excluding depreciation and amortization expense) 108,884 101,026
Depreciation and amortization expense 69,897 54,671
Total costs associated with service revenues 178,781 155,697
Cost of Goods Sold 176,728 207,806
General and administrative expenses (excluding depreciation and amortization expense) 19,774 24,595
Other depreciation and amortization expense 2,118 2,193
Total costs and expenses 377,401 390,291
Operating income 98,480 97,139
Interest expense, net (47,772) (36,414)
Other income, net 79,752 140
Income before income tax expense 130,460 60,865
Income tax expense 4,327 2,925
Net income $ 126,133 $ 57,940
Basic net income per common unit (Note 13) $ 1.15 $ 0.49
Basic weighted-average common units outstanding 93,181,781 78,642,888
Comprehensive income $ 147,057 $ 61,703