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ACQUISITION OF DNP PHOTOMASK TECHNOLOGY TAIWAN CO., LTD. (Details) - USD ($) $ in Millions | Apr. 04, 2014 | Aug. 02, 2015
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Business Acquisition [Line Items] |  |
Date of acquisition | Apr. 04, 2014 |
Ownership percentage in PDMC (in hundredths) |  | 50.01%
DNP [Member] |  |
Business Acquisition [Line Items] |  |
Ownership percentage of noncontrolling interests (in hundredths) |  | 49.99%
DPTT [Member] |  |
Business Acquisition [Line Items] |  |
Date of acquisition | Apr. 04, 2014 |
Consideration transferred | $ 98.3 |

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