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Basis of Presentation and Significant Accounting Policies - Additional Information (Details)
 3 Months Ended 12 Months Ended
Mar. 31, 2020
USD ($)
Mar. 31, 2020
USD ($)
Dec. 31, 2019
USD ($)
Dec. 31, 2020
USD ($)
country
Dec. 31, 2019
USD ($)
Dec. 31, 2018
USD ($)
Jan. 01, 2019
USD ($)
Dec. 31, 2017
USD ($)
Accounting Policies [Line Items]                
Income (loss) on changes in the cash surrender value of life insurance policies       $ 1,100,000 $ 2,700,000 $ (1,200,000)    
Goodwill impairment   $ 57,100,000 $ 111,100,000 57,146,000 111,108,000 0    
Potential increase (decrease) on basis spread of discount rate on goodwill impairment 0.0050              
Impact of 50 basis points adverse change in discount rate on goodwill impairment $ 4,300,000 4,300,000            
Goodwill     99,932,000 $ 42,785,000 99,932,000      
Number of countries in which entity operates | country       40        
Amortization expense for intangible assets       $ 4,400,000 10,800,000 10,800,000    
Impairment of intangible assets, finite-lived   $ 4,700,000 3,300,000 4,708,000 3,299,000 0    
Depreciation expense       65,800,000 82,000,000.0 100,500,000    
Operating lease assets     32,585,000 28,116,000 32,585,000      
Operating lease, liability     32,894,000 29,040,000 32,894,000      
Adjustment to retained earnings due to new accounting guidance     (810,294,000) (661,249,000) (810,294,000) (1,034,772,000)   $ (1,115,901,000)
Retained Earnings (Deficit)                
Accounting Policies [Line Items]                
Adjustment to retained earnings due to new accounting guidance     220,805,000 377,346,000 220,805,000 (16,860,000)   (106,923,000)
Cumulative Effect, Period of Adoption, Adjustment                
Accounting Policies [Line Items]                
Adjustment to retained earnings due to new accounting guidance     321,000   321,000 700,000   (670,000)
Cumulative Effect, Period of Adoption, Adjustment | Retained Earnings (Deficit)                
Accounting Policies [Line Items]                
Adjustment to retained earnings due to new accounting guidance     $ 321,000   $ 321,000 $ 700,000 $ 700,000 $ (670,000)
Accounting Standards Update 2016-02                
Accounting Policies [Line Items]                
Operating lease assets             34,900,000  
Operating lease, liability             $ 34,400,000  
Cementing Equipment                
Accounting Policies [Line Items]                
Goodwill       24,100,000        
Tubular Running Services                
Accounting Policies [Line Items]                
Goodwill       $ 18,700,000        
Number of countries in which entity operates | country       40        
Minimum                
Accounting Policies [Line Items]                
Payment term       30 days        
Maximum                
Accounting Policies [Line Items]                
Payment term       120 days