Reporting cumulative assets eliminations.

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- Definition

Elimination of intercompany revenues.

+ References

No definition available.

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- Definition

Revenue from inter company transactions.

+ References

No definition available.

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- Definition

Segment long-lived assets elimination.

+ References

No definition available.

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- Definition

Sum of the carrying amounts as of the balance sheet date of all assets that are recognized. Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

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-Subparagraph (SX 210.5-02.18)

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-Name Regulation S-X (SX)

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- Definition

Sum of operating profit and nonoperating income or expense before Income or Loss from equity method investments, income taxes, extraordinary items, and noncontrolling interest.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 235

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.4-08.(h)(1)(i))

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- Definition

Long-lived assets other than financial instruments, long-term customer relationships of a financial institution, mortgage and other servicing rights, deferred policy acquisition costs, and deferred tax assets.

+ References

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-Publisher FASB

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-Topic 280

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-Subparagraph (b)

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- Definition

Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss).

+ References

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-Subparagraph (SX 210.5-03.1)

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- Definition

Aggregate revenue during the period from the sale of goods in the normal course of business, after deducting returns, allowances and discounts.

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- Definition

Aggregate revenue during the period from services rendered in the normal course of business, after deducting allowances and discounts.

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Geographic Areas - Schedule of Segment Reporting (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended								12 Months Ended
	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, 2014	Dec. 31, 2013	Dec. 31, 2012
Segment Reporting Information [Line Items]
Products									$ 773,205us-gaap_SalesRevenueGoodsNet	$ 731,617us-gaap_SalesRevenueGoodsNet	$ 610,218us-gaap_SalesRevenueGoodsNet
Services									157,752us-gaap_SalesRevenueServicesNet	140,755us-gaap_SalesRevenueServicesNet	122,813us-gaap_SalesRevenueServicesNet
Intercompany									68,978drq_RevenueFromInterCompanyTransactions	62,176drq_RevenueFromInterCompanyTransactions	70,836drq_RevenueFromInterCompanyTransactions
Eliminations									(68,978)drq_ReportingInformationEliminations	(62,176)drq_ReportingInformationEliminations	(70,836)drq_ReportingInformationEliminations
Total revenues	254,819us-gaap_Revenues	241,750us-gaap_Revenues	230,315us-gaap_Revenues	204,073us-gaap_Revenues	232,462us-gaap_Revenues	224,724us-gaap_Revenues	222,031us-gaap_Revenues	193,155us-gaap_Revenues	930,957us-gaap_Revenues	872,372us-gaap_Revenues	733,031us-gaap_Revenues
Income before income taxes									279,380	224,097	162,122
Total Long-Lived Assets	322,111us-gaap_NoncurrentAssets				315,799us-gaap_NoncurrentAssets				322,111us-gaap_NoncurrentAssets	315,799us-gaap_NoncurrentAssets	307,059us-gaap_NoncurrentAssets
Total Assets	1,449,251us-gaap_Assets				1,396,805us-gaap_Assets				1,449,251us-gaap_Assets	1,396,805us-gaap_Assets	1,249,708us-gaap_Assets
Eliminations [Member]
Segment Reporting Information [Line Items]
Total Long-Lived Assets Eliminations	(2,926)				(2,927)				(2,926)	(2,927)	(2,959)
Income before income taxes									2,726	7,791	6,969
Total Assets Eliminations	(12,307)				(17,530)				(12,307)	(17,530)	(32,982)
Western Hemisphere [Member] \| Operating Segments [Member]
Segment Reporting Information [Line Items]
Products									430,597	420,439	298,853
Services									74,544	72,328	68,938
Intercompany									55,094	51,767	65,803
Total revenues									560,235	544,534	433,594
Income before income taxes									143,206	111,498	76,771
Total Long-Lived Assets	221,597				216,104				221,597	216,104	215,340
Total Assets	731,448				805,399				731,448	805,399	745,503
Eastern Hemisphere [Member] \| Operating Segments [Member]
Segment Reporting Information [Line Items]
Products									205,185	186,074	196,328
Services									59,794	46,653	37,307
Intercompany									10,719	1,254	4,065
Total revenues									275,698	233,981	237,700
Income before income taxes									79,146	49,672	44,904
Total Long-Lived Assets	45,517				43,430				45,517	43,430	36,194
Total Assets	375,781				316,473				375,781	316,473	275,868
Asia-Pacific [Member] \| Operating Segments [Member]
Segment Reporting Information [Line Items]
Products									137,423	125,104	115,037
Services									23,414	21,774	16,568
Intercompany									3,165	9,155	968
Total revenues									164,002	156,033	132,573
Income before income taxes									54,302	55,136	33,478
Total Long-Lived Assets	57,923				59,192				57,923	59,192	58,484
Total Assets	$ 354,329				$ 292,463				$ 354,329	$ 292,463	$ 261,319