Allocated share based compensation expense capitalized.

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- Definition

Number Of Companies

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- Definition

Options granted contractual term.

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- Definition

Percentage Of Fees In Lieu Of Cash To Be Received As Share Based Compensation

+ References

No definition available.

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- Definition

Performance Stock Units Expense

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- Definition

Result Rate Based On Which Unrecognized Compensation Expense Is Considered.

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No definition available.

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- Definition

Range in percentage that the participants may earn of their target award.

+ References

No definition available.

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- Definition

Share Based Compensation Arrangement By Share Based Payment Award Percentage Of Market Price At Which Eligible Employees Are Granted Options To Purchase Shares

+ References

No definition available.

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- Definition

Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

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-Section S99

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-Subparagraph (SAB TOPIC 14.F)

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-Publisher SEC

-Name Staff Accounting Bulletin (SAB)

-Number Topic 14

-Section F

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- Definition

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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-Publisher FASB

-Name Accounting Standards Codification

-Topic 260

-SubTopic 10

-Section 50

-Paragraph 1

-Subparagraph (c)

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-Glossary Antidilution

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-Glossary Diluted Earnings Per Share

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-Publisher FASB

-Name Accounting Standards Codification

-Glossary Contingent Stock Agreement

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- Definition

Unrecognized cost of unvested share-based compensation awards.

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-Publisher FASB

-Name Accounting Standards Codification

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-SubTopic 10

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- Definition

Weighted average period over which unrecognized compensation is expected to be recognized for equity-based compensation plans, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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- Definition

The total recognized tax benefit related to compensation cost for equity-based payment arrangements recognized in income during the period.

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

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- Definition

Disclosure of the aggregate tax benefit realized from the exercise of stock options and the conversion of similar instruments during the annual period.

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

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-Paragraph 2

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- Definition

The noncash expense that represents the cost of restricted stock or unit distributed to employees as compensation.

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 28

-Subparagraph (b)

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- Definition

Period which an employee's right to exercise an award is no longer contingent on satisfaction of either a service condition, market condition or a performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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- Definition

The maximum number of shares (or other type of equity) originally approved (usually by shareholders and board of directors), net of any subsequent amendments and adjustments, for awards under the equity-based compensation plan. As stock or unit options and equity instruments other than options are awarded to participants, the shares or units remain authorized and become reserved for issuance under outstanding awards (not necessarily vested).

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- Definition

Amount of accumulated difference between fair value of underlying shares on dates of exercise and exercise price on options exercised (or share units converted) into shares.

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

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-Paragraph 2

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- Definition

Gross number of share options (or share units) granted during the period.

+ References

No definition available.

+ Details

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- Definition

Price of a single share of a number of saleable stocks of a company.

+ References

No definition available.

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- Definition

The noncash expense that accounts for the value of stock or unit options distributed to employees as compensation.

+ References

+ Details

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Stock-Based Compensation and Stock Awards - Additional Information (Detail) (USD $)	12 Months Ended			0 Months Ended
	Dec. 31, 2014 Company	Dec. 31, 2013	Dec. 31, 2012	Oct. 28, 2014	Oct. 28, 2013	May 13, 2004
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Intrinsic value of stock options exercised	$ 2,000,000	$ 10,700,000	$ 7,600,000
Stock-based compensation expense for stock option exercises	2,500,000us-gaap_StockOptionPlanExpense	3,400,000us-gaap_StockOptionPlanExpense	3,800,000us-gaap_StockOptionPlanExpense
Allocated Share Based Compensation Expense Capitalized	0	0	0
Restricted stock awards compensation expense	6,300,000us-gaap_RestrictedStockExpense	3,900,000us-gaap_RestrictedStockExpense	1,700,000us-gaap_RestrictedStockExpense
Number of components companies in the Philadelphia Oil Service Index	15drq_NumberOfCompanies
Performance Unit compensation expense	3,100,000drq_PerformanceStockUnitsExpense	1,600,000drq_PerformanceStockUnitsExpense	200,000drq_PerformanceStockUnitsExpense
Performance Unit Awards [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Anti-dilutive awards	8,144
Unrecognized compensation expense related to share based compensation	9,200,000
Period of recognition for unrecognized compensation expense related to nonvested performance units	1 year 7 months 6 days
Share value based on Monte Carlo simulation				$ 126.84	$ 138.31
Percentage of grant share price				139.40%	118.40%
Result rate based on which unrecognized compensation expense is considered	100.00%
Performance Unit Awards [Member] \| Minimum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Participants earning under the term				0.00%
Performance Unit Awards [Member] \| Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Participants earning under the term				200.00%
Stock Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Income tax benefit realized from stock options exercised	718,000
Anti-dilutive awards	0
Unrecognized compensation expense related to share based compensation	1,200,000
Period of recognition for unrecognized compensation expense related to nonvested performance units	9 months 18 days
Restricted Stock Awards [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Anti-dilutive awards	15,400
Vesting period, in years	3 years
Unrecognized compensation expense related to share based compensation	13,700,000
Period of recognition for unrecognized compensation expense related to nonvested performance units	1 year 7 months 6 days
Income tax benefit recognized	2,200,000
DSA [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Anti-dilutive awards	303
Unrecognized compensation expense related to share based compensation	85,500
Period of recognition for unrecognized compensation expense related to nonvested performance units	1 year
Fees in lieu of cash	125.00%
Director stock compensation awards expense	$ 21,600
2004 Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
The maximum number of shares authorized						2,696,294
Options granted period						10 years
2004 Plan [Member] \| Performance Unit Awards [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of authorized shares granted by options				45,729	31,707
2004 Plan [Member] \| Stock Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period, in years						4 years