XML 63 R50.htm IDEA: XBRL DOCUMENT
v3.22.4

Stock-Based Compensation (Details) - USD ($) $ in Thousands |  |  |  | 12 Months Ended |
--- | --- | --- | --- | --- | ---
Jun. 09, 2020 | May 01, 2018 | May 05, 2016 | Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2016
Stock-Based Compensation Plans |  |  |  |  |  |
Number of awards previously granted under prior plans remains outstanding |  |  |  | 0 |  |
Stock-based compensation expense |  |  |  | $ 413 | $ 479 |
Restricted stock units |  |  |  |  |  |
Stock-Based Compensation Plans |  |  |  |  |  |
Stock-based compensation expense |  |  |  | $ 413 | 419 |
Common stock awards |  |  |  |  |  |
Stock-Based Compensation Plans |  |  |  |  |  |
Stock-based compensation expense |  |  |  |  | $ 60 |
The 2016 Plan |  |  |  |  |  |
Stock-Based Compensation Plans |  |  |  |  |  |
Number of shares authorized |  | 1,050,000 |  |  |  | 1,000,000
Percentage of stock dividend approved by the board |  | 5.00% |  |  |  |
Restated 2016 Plan |  |  |  |  |  |
Stock-Based Compensation Plans |  |  |  |  |  |
Number of shares authorized | 2,050,000 |  |  |  |  |
Number of additional shares authorized | 1,000,000 |  |  |  |  |
Shares available for future issuance |  |  |  | 1,264,487 |  |
Option expiration term |  |  | 10 years |  |  |

X
- Definition Number of awards previously granted under prior plans remains outstanding. + References No definition available. + Details
Name: | dwsn_AwardsPreviouslyGrantedRemainOutstanding
Namespace Prefix: | dwsn_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

X
- Definition Represents the percentage of stock dividend approved by the Board. + References No definition available. + Details
Name: | dwsn_PercentageOfStockDividendApprovedByBoard
Namespace Prefix: | dwsn_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of expense for award under share-based payment arrangement. Excludes amount capitalized. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(1)(i) -URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901 + Details
Name: | us-gaap_AllocatedShareBasedCompensationExpense
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Aggregate number of common shares reserved for future issuance. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.29) -URI https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
Name: | us-gaap_CommonStockCapitalSharesReservedForFutureIssuance
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

X
- 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_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Number of additional shares authorized for issuance under share-based payment arrangement. + References No definition available. + Details
Name: | us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfAdditionalSharesAuthorized
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition Number of shares authorized for issuance under share-based payment arrangement. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a)(3) -URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901 + Details
Name: | us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

X
- Definition Period from grant date that an equity-based award expires, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a)(2) -URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901 + Details
Name: | us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardExpirationPeriod
Namespace Prefix: | us-gaap_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_AwardTypeAxis=us-gaap_RestrictedStockUnitsRSUMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_AwardTypeAxis=us-gaap_StockCompensationPlanMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_PlanNameAxis=dwsn_Plan2016Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_PlanNameAxis=dwsn_Restated2016PlanMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |