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Revenue Recognition	6 Months Ended
Revenue Recognition	Jun. 30, 2013
Revenue Recognition [Abstract]
Revenue Recognition [Text Block]	Revenue Recognition The Company has entered into a number of license agreements covering its light-control technology. The Company receives minimum annual royalties under certain license agreements and records fee income on a ratable basis each quarter. In instances when sales of licensed products by its licensees exceed minimum annual royalties, the Company recognizes fee income as the amounts have been earned. Certain of the fees are accrued by, or paid to, the Company in advance of the period in which they are earned resulting in deferred revenue. Such excess amounts are recorded as deferred revenue and recognized into income in future periods as earned.