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ACQUISITION OF DNP PHOTOMASK TECHNOLOGY TAIWAN CO., LTD. (Details) (USD $) In Millions, unless otherwise specified	0 Months Ended	3 Months Ended
	Apr. 04, 2014	Feb. 01, 2015	Feb. 02, 2014
Business Acquisition [Line Items]
Date of acquisition		Apr. 04, 2014
Consideration transferred	$ 98.3
Ownership percentage in PDMC (in hundredths)		50.01%
Acquisition costs related to the merger included in selling, general and administrative expense			$ 0.4
DNP [Member]
Business Acquisition [Line Items]
Ownership percentage of noncontrolling interests (in hundredths)		49.99%
PSMC [Member]
Business Acquisition [Line Items]
Number of shares transferred to noncontrolling interests (in shares)		112.9
Customer Relationships [Member]
Business Acquisition [Line Items]
Estimated amortization period		12 years