Represents the percentage of dividend paid on outstanding common shares.

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Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented.

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- Definition

The amount of net income (loss) for the period per each share of common stock or unit outstanding during the reporting period.

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- Definition

The amount of net income (loss) for the period available to each share of common stock or common unit outstanding during the reporting period and to each share or unit that would have been outstanding assuming the issuance of common shares or units for all dilutive potential common shares or units outstanding during the reporting period.

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Additional shares included in the calculation of diluted EPS as a result of the potentially dilutive effect of share based payment arrangements using the treasury stock method.

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- Definition

Net income after adjustments for dividends on preferred stock (declared in the period) and/or cumulative preferred stock (accumulated for the period).

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- Definition

Ratio applied to the conversion of stock split, for example but not limited to, one share converted to two or two shares converted to one.

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The average number of shares or units issued and outstanding that are used in calculating diluted EPS or earnings per unit (EPU), determined based on the timing of issuance of shares or units in the period.

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Number of [basic] shares or units, after adjustment for contingently issuable shares or units and other shares or units not deemed outstanding, determined by relating the portion of time within a reporting period that common shares or units have been outstanding to the total time in that period.

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SHAREHOLDERS' EQUITY (Details) (USD $)	0 Months Ended		3 Months Ended												12 Months Ended			0 Months Ended
SHAREHOLDERS' EQUITY (Details) (USD $)	May 14, 2013	May 14, 2012	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Feb. 11, 2015
Numerator:
Net Income (loss)			$ (5,767,000)	$ (4,009,000)	$ (4,032,000)	$ 4,280,000					$ (4,712,000)	$ (3,952,000)	$ (4,004,000)	$ 6,351,000	$ (9,528,330)	$ (6,316,041)	$ 15,671,879
Denominator:
Basic - weighted average common shares outstanding															7,322,358	7,280,527	7,171,212
Effect of Dilutive Securities:
Stock options																	128,246
Diluted - weighted average common shares outstanding															7,322,358	7,280,527	7,299,458
Basic net income (loss) per share			$ (0.79)us-gaap_EarningsPerShareBasic	$ (0.54)us-gaap_EarningsPerShareBasic	$ (0.54)us-gaap_EarningsPerShareBasic	$ 0.57us-gaap_EarningsPerShareBasic	$ (0.64)us-gaap_EarningsPerShareBasic	$ (0.55)us-gaap_EarningsPerShareBasic	$ (0.55)us-gaap_EarningsPerShareBasic	$ 0.87us-gaap_EarningsPerShareBasic					$ (1.30)us-gaap_EarningsPerShareBasic	$ (0.87)us-gaap_EarningsPerShareBasic	$ 2.19us-gaap_EarningsPerShareBasic
Diluted net income (loss) per share			$ (0.79)us-gaap_EarningsPerShareDiluted	$ (0.54)us-gaap_EarningsPerShareDiluted	$ (0.54)us-gaap_EarningsPerShareDiluted	$ 0.57us-gaap_EarningsPerShareDiluted		$ (0.55)us-gaap_EarningsPerShareDiluted	$ (0.55)us-gaap_EarningsPerShareDiluted	$ 0.87us-gaap_EarningsPerShareDiluted	$ (0.64)us-gaap_EarningsPerShareDiluted				$ (1.30)us-gaap_EarningsPerShareDiluted	$ (0.87)us-gaap_EarningsPerShareDiluted	$ 2.15us-gaap_EarningsPerShareDiluted
Other disclosures
Outstanding options that were not included in the diluted calculation because their effect would be anti-dilutive (in shares)															279,756	152,576	14,790
Percentage of dividend paid on common stock	5.00%dwsn_CommonStockDividendsPaidPercentage	5.00%dwsn_CommonStockDividendsPaidPercentage															5.00%dwsn_CommonStockDividendsPaidPercentage
Subsequent Events
Other disclosures
Reverse stock split ratio																		0.33