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Employee Benefit Plans (Details) - USD ($)
$ in Thousands
 3 Months Ended 12 Months Ended
Dec. 31, 2014
Dec. 31, 2015
Sep. 30, 2014
Sep. 30, 2013
Legacy Dawson Geophysical Company 401k Plan        
Percentage of employees gross pay that is matched 6.00% 6.00% 6.00% 6.00%
Employer matching contribution, percent matched 100.00% 100.00% 100.00% 100.00%
Matching contribution to the plan $ 462 $ 1,849 $ 1,895 $ 1,747
Legacy TGC 401k Plan        
Percentage of employees gross pay that is matched   6.00%    
Employer matching contribution, percent matched   50.00%    
Matching contribution to the plan   $ 98