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MAJOR CUSTOMER AND GEOGRAPHIC INFORMATION (Schedule of Major Customers) (Details) (U.S. Quartz Products, Inc. [Member])	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
U.S. Quartz Products, Inc. [Member]
Revenue, Major Customer [Line Items]
Percentage of total revenues			15.60%

X

- Details

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X

- Definition

Percentage of revenue generated from a single external customer that accounts for 10 percent or more of an entity's revenues.

+ References

No definition available.

+ Details

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