XML 44 R53.htm IDEA: XBRL DOCUMENT v2.4.1.9

Note 9 - Business Segment Information (Details) - Net Sales from External Customers by Product Category (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Segment Reporting Information [Line Items]
Sales Revenue, Net	$ 434,925us-gaap_SalesRevenueNet	$ 391,665us-gaap_SalesRevenueNet	$ 375,691us-gaap_SalesRevenueNet
Pumps And Pump Systems [Member]
Segment Reporting Information [Line Items]
Sales Revenue, Net	379,626us-gaap_SalesRevenueNet / us-gaap_ProductOrServiceAxis = grc_PumpsAndPumpSystemsMember	336,779us-gaap_SalesRevenueNet / us-gaap_ProductOrServiceAxis = grc_PumpsAndPumpSystemsMember	318,235us-gaap_SalesRevenueNet / us-gaap_ProductOrServiceAxis = grc_PumpsAndPumpSystemsMember
Repairs And Other [Member]
Segment Reporting Information [Line Items]
Sales Revenue, Net	$ 55,299us-gaap_SalesRevenueNet / us-gaap_ProductOrServiceAxis = grc_RepairsAndOtherMember	$ 54,886us-gaap_SalesRevenueNet / us-gaap_ProductOrServiceAxis = grc_RepairsAndOtherMember	$ 57,456us-gaap_SalesRevenueNet / us-gaap_ProductOrServiceAxis = grc_RepairsAndOtherMember

X

- Definition

Total revenue from sale of goods and services rendered during the reporting period, in the normal course of business, reduced by sales returns and allowances, and sales discounts.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 225

-SubTopic 10

-Section S99

-Paragraph 2

-Subparagraph (SX 210.5-03.1)

-URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 03

-Paragraph 1

-Article 5

+ Details

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- Details

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- Details

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Period Type:

X

- Details

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Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: