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Note 13 - Mergers and Acquisitions (Details Textual) - USD ($)
shares in Thousands
3 Months Ended 9 Months Ended 12 Months Ended
Sep. 25, 2015
May 18, 2015
Mar. 24, 2015
Mar. 23, 2015
May 30, 2014
Jun. 30, 2016
Dec. 31, 2015
Dec. 31, 2016
Mar. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Goodwill             $ 307,677,000   $ 307,677,000 $ 219,953,000
Business Combination, Acquisition Related Costs               10,534,000   42,662,000 20,159,000
Completion Services [Member]                      
Goodwill             0   200,149,000
Well Support Services [Member]                      
Goodwill             $ 307,677,000 $ 0   $ 307,677,000 $ 15,085,000
Developed Technology Rights [Member] | Minimum [Member]                      
Finite-Lived Intangible Asset, Useful Life               5 years      
Developed Technology Rights [Member] | Maximum [Member]                      
Finite-Lived Intangible Asset, Useful Life               15 years      
Customer Relationships [Member] | Minimum [Member]                      
Finite-Lived Intangible Asset, Useful Life               8 years      
Customer Relationships [Member] | Maximum [Member]                      
Finite-Lived Intangible Asset, Useful Life               15 years      
Trade Names [Member] | Minimum [Member]                      
Finite-Lived Intangible Asset, Useful Life               10 years      
Trade Names [Member] | Maximum [Member]                      
Finite-Lived Intangible Asset, Useful Life               15 years      
Noncompete Agreements [Member] | Minimum [Member]                      
Finite-Lived Intangible Asset, Useful Life               4 years      
Noncompete Agreements [Member] | Maximum [Member]                      
Finite-Lived Intangible Asset, Useful Life               5 years      
Credit Agreement [Member] | Bank of America N.A. [Member]                      
Debt Agreement, Maximum Borrowing Capacity     $ 1,660,000,000                
Nabors Industries, Ltd. [Member]                      
Business Combination, Consideration Transferred     1,400,000,000                
Payments to Acquire Businesses, Gross     688,100,000                
Business Acquisition, Equity Interest Issued or Issuable, Value Assigned     714,800,000                
Business Acquisition, Equity Interest Issued or Issuable, Number of Shares       62,500              
Noncontrolling Interest, Ownership Percentage by Noncontrolling Owners             53.00%     53.00%  
Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Consideration Transferred $ 43,400,000               $ (43,401,000) [1]    
Business Combination, Acquired Receivables, Fair Value     274,100,000                
Business Combination, Acquired Receivables, Gross Contractual Amount     296,200,000                
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill     28,300,000           $ 42,000,000    
Finite-Lived Intangible Asset, Useful Life                 11 years    
Goodwill     444,162,000           $ 456,846,000    
Business Acquisition, Goodwill, Expected Tax Deductible Amount                 60,800,000    
Business Acquisition, Intangible Assets (Excluding Goodwill), Expected Tax Deductible Amount                 22,300,000    
Deferred Tax Liabilities, Other                 208,900,000    
Business Combination, Acquisition Related Costs                   $ 42,700,000  
Business Combination, Pro Forma Information, Revenue of Acquiree since Acquisition Date, Actual             $ 822,200,000        
Business Combination, Pro Forma Information, Earnings or Loss of Acquiree since Acquisition Date, Actual             $ 211,100,000        
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Net     $ 1,408,335,000           1,364,934,000    
Nabors Industries, Ltd. [Member] | Completion Services [Member]                      
Goodwill                 141,400,000    
Nabors Industries, Ltd. [Member] | Well Support Services [Member]                      
Goodwill                 315,400,000    
Nabors Industries, Ltd. [Member] | Developed Technology Rights [Member]                      
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill                 $ 19,600,000    
Nabors Industries, Ltd. [Member] | Developed Technology Rights [Member] | Minimum [Member]                      
Finite-Lived Intangible Asset, Useful Life                 5 years    
Nabors Industries, Ltd. [Member] | Developed Technology Rights [Member] | Maximum [Member]                      
Finite-Lived Intangible Asset, Useful Life                 15 years    
Nabors Industries, Ltd. [Member] | Customer Relationships [Member]                      
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill                 $ 13,000,000    
Finite-Lived Intangible Asset, Useful Life                 15 years    
Nabors Industries, Ltd. [Member] | Trade Names [Member]                      
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill                 $ 8,500,000    
Finite-Lived Intangible Asset, Useful Life                 10 years    
Nabors Industries, Ltd. [Member] | Noncompete Agreements [Member]                      
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill                 $ 900,000    
Finite-Lived Intangible Asset, Useful Life                 5 years    
Nabors Industries, Ltd. [Member] | Replacement Restricted Stock and Stock Options [Member]                      
Business Acquisition, Equity Interest Issued or Issuable, Number of Shares     400 400              
Nabors Industries, Ltd. [Member] | Reimbursed Cash for Operating Assets [Member]                      
Other Payments to Acquire Businesses     $ 5,500,000                
ESPCT [Member]                      
Business Combination, Consideration Transferred   $ 34,000,000           $ 34,000,000      
Payments to Acquire Businesses, Gross   13,600,000                  
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill   5,173,000                  
Goodwill   24,219,000                  
Business Combination, Consideration Transferred, Liabilities Incurred   6,000,000                  
Business Combination, Contingent Consideration, Liability   14,400,000           $ 0      
Business Combination, Provisional Information, Adjustment, Working Capital           $ (500,000)          
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Net   33,473,000       $ 33,500,000          
Business Combination, Contingent Consideration, Future Tiered Maximum Payments   29,500,000                  
Business Combination, Contingent Consideration, Maximum Total Purchase Price   $ 49,100,000                  
Tiger [Member]                      
Business Combination, Consideration Transferred         $ 33,200,000            
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill         17,340,000            
Goodwill         14,671,000            
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Net         $ 33,244,000            
[1] The measurement period adjustments reflect changes in the estimated fair values of certain assets and liabilities, including income taxes. The measurement period adjustments were recorded to reflect new information obtained about facts and circumstances existing as of the date the Merger was consummated and did not result from intervening events subsequent to that date.