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Segment Information (Details 2) (USD $) In Thousands, unless otherwise specified | Sep. 30, 2014 | Dec. 31, 2013
--- | --- | ---
Reconciliation of Segment goodwill and total assets to Consolidated goodwill and total assets |  |
Goodwill | $ 91,521 | $ 91,348
Total assets | 956,398 | 947,969
Operating segment | LED And Solar |  |
Reconciliation of Segment goodwill and total assets to Consolidated goodwill and total assets |  |
Goodwill | 91,521 | 91,348
Total assets | 388,745 | 359,464
Operating segment | Data Storage |  |
Reconciliation of Segment goodwill and total assets to Consolidated goodwill and total assets |  |
Total assets | 33,936 | 37,910
Unallocated Corporate |  |
Reconciliation of Segment goodwill and total assets to Consolidated goodwill and total assets |  |
Total assets | $ 533,717 | $ 550,595

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