Quarterly report pursuant to Section 13 or 15(d)

CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS

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CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($)
shares in Thousands, $ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2018
Sep. 30, 2017
Sep. 30, 2018
Sep. 30, 2017
Income Statement [Abstract]        
REVENUE - Service revenue $ 434,041 $ 282,730 $ 1,279,148 $ 668,153
COSTS AND EXPENSES        
Cost of services (exclusive of depreciation and amortization) 320,146 225,433 970,156 551,775
General and administrative (inclusive of stock-based compensation) 12,821 11,106 38,943 38,881
Depreciation and amortization 23,217 14,745 63,428 38,602
Loss on disposal of assets 16,407 8,742 43,061 28,971
Total costs and expenses 372,591 260,026 1,115,588 658,229
OPERATING INCOME 61,450 22,704 163,560 9,924
OTHER EXPENSE:        
Interest expense (1,480) (644) (4,973) (6,469)
Other expense (93) (191) (505) (792)
Total other expense (1,573) (835) (5,478) (7,261)
INCOME BEFORE INCOME TAXES 59,877 21,869 158,082 2,663
INCOME TAX (EXPENSE)/BENEFIT (13,592) 96 (35,998) (128)
NET INCOME $ 46,285 $ 21,965 $ 122,084 $ 2,535
NET INCOME PER COMMON SHARE:        
Basic (in dollars per share) $ 0.55 $ 0.26 $ 1.46 $ 0.03
Diluted (in dollars per share) $ 0.53 $ 0.25 $ 1.40 $ 0.03
WEIGHTED AVERAGE COMMON SHARES OUTSTANDING:        
Basic (in shares) 83,544 83,040 83,359 74,124
Diluted (in shares) 86,878 86,264 87,153 77,118