ACQUISITION OF DNP PHOTOMASK TECHNOLOGY TAIWAN CO., LTD. (Details) (USD $)	0 Months Ended	3 Months Ended	6 Months Ended			3 Months Ended		6 Months Ended		3 Months Ended	6 Months Ended
	Apr. 04, 2014	May 04, 2014	May 04, 2014	Apr. 28, 2013	May 04, 2014 DNP [Member]	May 04, 2014 DPTT [Member]	Apr. 28, 2013 DPTT [Member]	May 04, 2014 DPTT [Member]	Apr. 28, 2013 DPTT [Member]	May 04, 2014 PDMC [Member]	May 04, 2014 Customer Relationships [Member]
Business Acquisition [Line Items]
Date of acquisition			Apr. 04, 2014
Consideration transferred	$ 41,000,000
Ownership percentage in PDMC (in hundredths)		50.01%	50.01%
Ownership percentage of noncontrolling interests (in hundredths)					49.99%
Estimated amortization period											12 years
Acquisition costs related to the merger included in selling, general and administrative expense		2,000,000	2,500,000
Revenues										13,100,000
Net income										400,000
Reduction of depreciation recorded against DPTT long-lived assets			$ 36,782,000	$ 37,490,000		$ (3,400,000)	$ (3,300,000)	$ (6,600,000)	$ (6,400,000)