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TREASURY STOCK (Details) (USD $) In Millions, except Share data	1 Months Ended	12 Months Ended
	Dec. 31, 2004	Jul. 31, 2010	Jul. 29, 2006
TREASURY STOCK.
Value of common stock authorized for repurchase	$ 50
Number of shares repurchased (in shares)			228,800
Aggregate cost of common stock repurchased			$ 6.1
Treasury shares issued related to stock options and vesting of restricted stock units and awards under its equity incentive plans (in shares)		201,814

Number of shares that have been repurchased during the period and have not been retired and are not held in treasury. Some state laws may govern the circumstances under which an entity may acquire its own stock and prescribe the accounting treatment therefore. This element is used when state law does not recognize treasury stock.

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- Definition

Equity impact of the value of stock that has been repurchased during the period and has not been retired and is not held in treasury. Some state laws may mandate the circumstances under which an entity may acquire its own stock and prescribe the accounting treatment therefore. This element is used when state law does not recognize treasury stock.

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