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CONSOLIDATED STATEMENTS OF STOCKHOLDERS’ EQUITY - USD ($)
shares in Thousands, $ in Thousands
Total
Common Stock
Additional Paid in Capital
Treasury Stock
Retained Earnings (Deficit)
Accumulated Other Comprehensive Loss
Total Sterling Stockholders’ Equity
Non-controlling Interests
Beginning balance (in shares) at Dec. 31, 2020   28,184            
Beginning balance at Dec. 31, 2020 $ 268,729 $ 283 $ 256,423 $ (1,445) $ 17,273 $ (5,264) $ 267,270 $ 1,459
Beginning balance (in shares) at Dec. 31, 2020       95        
Increase (Decrease) in Stockholders' Equity [Roll Forward]                
Net income 65,123       62,645   62,645 2,478
Change in interest rate swap 3,541         3,541 3,541  
Stock-based compensation 11,771   11,771       11,771  
Distributions to owners (2,477)             (2,477)
Stock issued for acquisition (in shares)   759            
Stock issued for acquisition 20,406 $ 8 20,398       20,406  
Issuance of stock (in shares)   1,207   (111)        
Issuance of stock 475 $ 10 (1,276) $ 1,741     475  
Shares withheld for taxes (in shares)   (312)   (16)        
Shares withheld for taxes (7,338) $ (3) (7,039) $ (296)     (7,338)  
Other (3)   (3)       (3)  
Ending balance (in shares) at Dec. 31, 2021   29,838            
Ending balance at Dec. 31, 2021 360,227 $ 298 280,274 $ 0 79,918 (1,723) 358,767 1,460
Ending balance (in shares) at Dec. 31, 2021       0        
Increase (Decrease) in Stockholders' Equity [Roll Forward]                
Net income 108,201       106,461   106,461 1,740
Change in interest rate swap 1,723         1,723 1,723  
Stock-based compensation 11,526   11,526       11,526  
Stock issued for acquisition (in shares)   157            
Stock issued for acquisition 4,851 $ 2 4,849       4,851  
Issuance of stock (in shares)   920   0        
Issuance of stock 687 $ 9 678 $ 0     687  
Shares withheld for taxes (in shares)   (330)   0        
Shares withheld for taxes $ (9,416) $ (3) (9,413) $ 0     (9,416)  
Ending balance (in shares) at Dec. 31, 2022 30,585 30,585            
Ending balance at Dec. 31, 2022 $ 477,799 $ 306 287,914 $ 0 186,379 0 474,599 3,200
Ending balance (in shares) at Dec. 31, 2022       0        
Increase (Decrease) in Stockholders' Equity [Roll Forward]                
Net income 142,845       138,655   138,655 4,190
Change in interest rate swap 0              
Stock-based compensation 14,332   14,332       14,332  
Distributions to owners (2,450)             (2,450)
Issuance of stock (in shares)   515            
Issuance of stock 910 $ 3 907       910  
Shares withheld for taxes (in shares)   (174)            
Shares withheld for taxes (9,567) $ 0 (9,567)       (9,567)  
Other (in shares)   0            
Other $ (16)   (16)       (16)  
Ending balance (in shares) at Dec. 31, 2023 30,926 30,926            
Ending balance at Dec. 31, 2023 $ 623,853 $ 309 $ 293,570 $ 0 $ 325,034 $ 0 $ 618,913 $ 4,940
Ending balance (in shares) at Dec. 31, 2023       0