XML 14 R25.htm IDEA: XBRL DOCUMENT v2.4.1.9

Aggregate Maturities of Notes Payable and Obligations Under Capital Leases (Detail) (USD $)	Dec. 31, 2014
Notes Payable And Capital Lease Obligations [Line Items]
January 2015 - December 2015	$ 6,018,000us-gaap_ContractualObligationDueInNextTwelveMonths
January 2016 - December 2016	3,961,000us-gaap_ContractualObligationDueInSecondYear
January 2017 - December 2017	248,000us-gaap_ContractualObligationDueInThirdYear
Total	$ 10,227,000us-gaap_ContractualObligation

X

- Details

Name:	dwsn_NotesPayableAndCapitalLeaseObligationsLineItems
Namespace Prefix:	dwsn_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Amount of contractual obligation, including but not limited to, long-term debt, capital lease obligations, operating lease obligations, purchase obligations, and other commitments.

+ References

No definition available.

+ Details

Name:	us-gaap_ContractualObligation
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

Amount of contractual obligation maturing in the next fiscal year following the latest fiscal year.

+ References

No definition available.

+ Details

Name:	us-gaap_ContractualObligationDueInNextTwelveMonths
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

Amount of contractual obligation maturing in the second fiscal year following the latest fiscal year.

+ References

No definition available.

+ Details

Name:	us-gaap_ContractualObligationDueInSecondYear
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

Amount of contractual obligation maturing in the third fiscal year following the latest fiscal year.

+ References

No definition available.

+ Details

Name:	us-gaap_ContractualObligationDueInThirdYear
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant