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Note B - Inventories (Tables)

6 Months Ended

Jun. 30, 2012

Schedule of Inventory, Current [Table Text Block]

(Thousands of dollars)		June 30, 2012				December 31, 2011
Raw materials and in-process		$	29,386			$	30,480
Finished parts			46,548				36,451
Finished products			9,505				6,262
Total inventories		$	85,439			$	73,193

X

- Definition

Tabular disclosure of the carrying amount as of the balance sheet date of merchandise, goods, commodities, or supplies held for future sale or to be used in manufacturing, servicing or production process.

+ References

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 2

-Paragraph 6

-Subparagraph a,b,c

-Article 5

+ Details

Name:	us-gaap_ScheduleOfInventoryCurrentTableTextBlock
Namespace Prefix:	us-gaap_
Data Type:	nonnum:textBlockItemType
Balance Type:	na
Period Type:	duration