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COMMITMENTS AND CONTINGENCIES (Details)	Jun. 15, 2016 item
Oklahoma
Commitments and Contingencies
Number of data acquisition crews that lost equipment due to flash flooding	2

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- Definition

Represents the number of data acquisition crews that lost equipment while operating in the area impacted by flash flooding.

+ References

No definition available.

+ Details

Name:	dwsn_NumberOfDataAcquisitionCrewsOperatingInFlashFloodingArea
Namespace Prefix:	dwsn_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

Name:	us-gaap_LossContingenciesLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

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- Details

Name:	us-gaap_StatementGeographicalAxis=stpr_OK
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: