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QUARTERLY DIVIDEND (Details) (USD $)	0 Months Ended
	Dec. 08, 2014	Aug. 29, 2014	May 30, 2014	Feb. 24, 2014	Feb. 03, 2014
QUARTERLY DIVIDEND
Dividend payable per share					$ 0.08us-gaap_DividendsPayableAmountPerShare
Quarterly dividend paid amount	$ 645,000dwsn_QuarterlyDividendCash	$ 645,000dwsn_QuarterlyDividendCash	$ 645,000dwsn_QuarterlyDividendCash	$ 645,000dwsn_QuarterlyDividendCash
Dividend paid amount on annualized basis	$ 2,580,000us-gaap_DividendsCash

X

- Definition

Quarterly dividend cash.

+ References

No definition available.

+ Details

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Namespace Prefix:	dwsn_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Details

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

X

- Definition

Amount of paid and unpaid cash dividends declared for classes of stock, for example, but not limited to, common and preferred.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 04

-Article 3



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 505

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.3-04)

-URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770



Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 942

-SubTopic 405

-Section 45

-Paragraph 2

-URI http://asc.fasb.org/extlink&oid=6957935&loc=d3e64057-112817

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

The per share amount of a dividend declared, but not paid, as of the financial reporting date.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 50

-Paragraph 3

-URI http://asc.fasb.org/extlink&oid=6367179&loc=d3e4304-108586

+ Details

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Namespace Prefix:	us-gaap_
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Period Type:	instant