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Condensed Consolidated Statements of Operations - USD ($)
shares in Thousands, $ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2022
Sep. 30, 2021
Sep. 30, 2022
Sep. 30, 2021
Income Statement [Abstract]        
Revenues $ 556,942 $ 463,449 $ 1,477,830 $ 1,180,431
Cost of revenues (474,919) (405,645) (1,271,284) (1,021,348)
Gross profit 82,023 57,804 206,546 159,083
General and administrative expense (26,466) (19,637) (72,962) (52,565)
Intangible asset amortization (3,509) (2,866) (10,591) (8,598)
Acquisition related costs (277) 0 (762) 0
Other operating expense, net (4,085) (3,270) (5,186) (10,414)
Operating income 47,686 32,031 117,045 87,506
Interest income 167 13 207 39
Interest expense (5,134) (3,919) (14,201) (15,660)
Gain on extinguishment of debt, net 0 968 2,428 2,032
Income before income taxes 42,719 29,093 105,479 73,917
Income tax expense (12,562) (7,336) (29,427) (20,275)
Net income 30,157 21,757 76,052 53,642
Less: Net income attributable to noncontrolling interests (634) (631) (1,316) (1,905)
Net income attributable to Sterling common stockholders $ 29,523 $ 21,126 $ 74,736 $ 51,737
Net income per share attributable to Sterling common stockholders:        
Basic (in dollars per share) $ 0.98 $ 0.74 $ 2.48 $ 1.81
Diluted (in dollars per share) $ 0.97 $ 0.72 $ 2.46 $ 1.79
Weighted average common shares outstanding:        
Basic (in shares) 30,278 28,710 30,156 28,527
Diluted (in shares) 30,540 29,213 30,364 28,927