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Note 7 - Share-based Compensation (Details Textual) - USD ($)
$ / shares in Units, shares in Thousands, $ in Thousands
1 Months Ended 3 Months Ended 12 Months Ended
Jun. 04, 2015
Mar. 24, 2015
Mar. 23, 2015
Feb. 28, 2016
Dec. 31, 2017
Dec. 31, 2017
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross             351    
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value             $ 20.66    
Allocated Share-based Compensation Expense             $ 23,400 $ 17,700 $ 18,500
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period, Intrinsic Value                 600
Share-based Compensation Arrangement by Share-based Payment Award, Options and Restricted Stock Outstanding, Number               5,300  
Employee Service Share-based Compensation, Tax Benefit from Compensation Expense               6,200 $ 6,500
Predecessor [Member]                  
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross                 267
Nabors Industries, Ltd. [Member]                  
Business Acquisition, Equity Interest Issued or Issuable, Number of Shares     62,500            
Restricted Stock [Member]                  
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized         $ 38,900 $ 38,900 $ 38,900 $ 8,900 $ 29,900
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition             2 years 219 days   1 year 153 days
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period             1,664    
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value             $ 37.92   $ 13.50
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeited in Period             38    
Restricted Stock [Member] | Predecessor [Member]                  
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period                 2,850
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value                 $ 13.50
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeited in Period               576 238
Performance Shares [Member]                  
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period             92    
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value             $ 37.20    
Replacement Restricted Stock and Stock Options [Member] | Nabors Industries, Ltd. [Member]                  
Business Acquisition, Equity Interest Issued or Issuable, Number of Shares   400              
Replacement Restricted Stock and Stock Options [Member] | Nabors Industries, Ltd. [Member] | Predecessor [Member]                  
Business Acquisition, Equity Interest Issued or Issuable, Number of Shares     400            
Management Incentive Plan [Member]                  
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized         8,000 8,000 8,000    
Management Incentive Plan [Member] | Employees [Member]                  
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized         $ 4,200 $ 4,200 $ 4,200    
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition           2 years 146 days      
Management Incentive Plan [Member] | Nonqualified Stock Options [Member] | Executive Officer [Member]                  
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross             400    
Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period             10 years    
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period             3 years    
Management Incentive Plan [Member] | Nonqualified Stock Options [Member] | Executive Officer [Member] | Vested on Grant Date [Member]                  
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage             34.00%    
Management Incentive Plan [Member] | Nonqualified Stock Options [Member] | Executive Officer [Member] | Vesting One Year After Grant Date [Member]                  
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage             22.00%    
Management Incentive Plan [Member] | Nonqualified Stock Options [Member] | Executive Officer [Member] | Minimum [Member]                  
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value             $ 16.55    
Management Incentive Plan [Member] | Nonqualified Stock Options [Member] | Executive Officer [Member] | Maximum [Member]                  
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value             $ 22.19    
Management Incentive Plan [Member] | Restricted Stock [Member]                  
Dividends, Share-based Compensation, Stock             $ 0    
Management Incentive Plan [Member] | Restricted Stock [Member] | Employee and Non Employee Directors [Member]                  
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period             1,700    
Management Incentive Plan [Member] | Restricted Stock [Member] | Employee and Non Employee Directors [Member] | Minimum [Member]                  
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value             $ 31.52    
Management Incentive Plan [Member] | Restricted Stock [Member] | Employee and Non Employee Directors [Member] | Maximum [Member]                  
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value             $ 44.90    
Management Incentive Plan [Member] | Restricted Stock [Member] | Employee Directors [Member] | Vested on Grant Date [Member]                  
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage             34.00%    
Management Incentive Plan [Member] | Restricted Stock [Member] | Employee Directors [Member] | Vesting One Year After Grant Date [Member]                  
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage             22.00%    
Management Incentive Plan [Member] | Performance Shares [Member]                  
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross         100        
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period         3 years        
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized         $ 3,400 $ 3,400 $ 3,400    
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition             3 years    
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value         $ 37.20        
Management Incentive Plan [Member] | Performance Shares [Member] | Minimum [Member]                  
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage         0.00%        
Management Incentive Plan [Member] | Performance Shares [Member] | Maximum [Member]                  
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage         200.00%        
LTIP 2012 [Member]                  
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized 4,300             11,300  
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross               0  
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeited in Period               900  
Share-based Compensation Arrangement by Share-based Payment Award, Options and Restricted Stock Outstanding, Number               $ 200  
For 2015 [Member]                  
Share-based Compensation Arrangement by Share-based Payment Award, Number of Additional Shares Authorized 3,600                
Second Amendment To The 2015 LTIP [Member]                  
Share-based Compensation Arrangement by Share-based Payment Award, Number of Additional Shares Authorized       6,000          
LTIP 2015 [Member]                  
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross               0  
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value                 $ 4.74
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeited in Period               700  
Share-based Compensation Arrangement by Share-based Payment Award, Options and Restricted Stock Outstanding, Number               $ 900  
LTIP 2015 [Member] | Predecessor [Member]                  
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant               11,300  
LTIP 2015 [Member] | Restricted Stock [Member] | Employee and Non Employee Directors [Member]                  
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period                 2,800
LTIP 2015 [Member] | Restricted Stock [Member] | Employees,Consultants and Non Employee Directors [Member]                  
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period               0  
LTIP 2015 [Member] | Restricted Stock [Member] | Employees,Consultants and Non Employee Directors [Member] | Minimum [Member]                  
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value                 $ 3.55
LTIP 2015 [Member] | Restricted Stock [Member] | Employees,Consultants and Non Employee Directors [Member] | Maximum [Member]                  
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value                 $ 15.10
LTIP 2015 [Member] | Replacement Restricted Shares [Member] | Employee and Non Employee Directors [Member]                  
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period                 600
Plan 2006 [Member]                  
Share-based Compensation Arrangement by Share-based Payment Award, Options and Restricted Stock Outstanding, Number               $ 300  
Plan 2010 [Member]                  
Share-based Compensation Arrangement by Share-based Payment Award, Options and Restricted Stock Outstanding, Number               $ 3,900