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Employee Benefit Plans (Details) - USD ($) | 12 Months Ended
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Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015
Legacy Dawson Geophysical Company 401k Plan |  |  |  |
Employer matching contribution, percent matched | 100.00% | 100.00% | 100.00% |
Percentage of employees gross pay that is matched | 6.00% | 6.00% | 6.00% |
Matching contribution to the plan | $ 1,505,000 | $ 1,480,000 | $ 1,658,000 |
Legacy TGC 401k Plan |  |  |  |
Employer matching contribution, percent matched |  |  |  | 50.00%
Percentage of employees gross pay that is matched |  |  |  | 6.00%

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- Definition Amount of cost for defined contribution plan. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 70 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=49170846&loc=d3e28014-114942 + Details
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- Definition Percentage of employees' gross pay for which the employer contributes a matching contribution to a defined contribution plan. + References No definition available. + Details
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- Definition Percentage employer matches of the employee's percentage contribution matched. + References No definition available. + Details
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- Details
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- Details
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