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Summary of Significant Accounting Policies (Narrative) (Details) - USD ($)	3 Months Ended		12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Cash and Cash Equivalents
Amounts on deposit in excess of federally insured limits	$ 5,000,000	$ 6,800,000	$ 5,000,000	$ 6,800,000
Basic and Diluted Loss Per Common Share
Number of options and warrants that were not included because their effect is antidilutive			2,197,369	2,924,419	2,860,219
Fair Value Measurements
Cash and cash equivalents	5,700,000	7,600,000	$ 5,700,000	$ 7,600,000
Short term investments	1,500,000	1,500,000	1,500,000	$ 1,500,000
Charge recorded for employee options and restricted stock	$ 483,000	$ 616,000
Share-based Goods and Nonemployee Services Transaction, Quantity of Securities Issued				24,000
Charge recorded for non-employees			10,007	$ 32,428	$ 369,844
Employee Stock Options and Restricted Stock [Member]
Fair Value Measurements
Charge recorded for employee options and restricted stock			$ 715,009	$ 1,010,489	$ 2,545,060
Licensee One [Member] | Sales [Member]
Revenue Recognition/Fee Income:
Concentration risk percentage			33.00%	36.00%	40.00%
Licensee Two [Member] | Sales [Member]
Revenue Recognition/Fee Income:
Concentration risk percentage			15.00%	11.00%	12.00%
Licensee Three [Member] | Sales [Member]
Revenue Recognition/Fee Income:
Concentration risk percentage			9.00%	9.00%	6.00%
Licensee Four [Member] | Sales [Member]
Revenue Recognition/Fee Income:
Concentration risk percentage				9.00%	6.00%
Licensee Five [Member] | Sales [Member]
Revenue Recognition/Fee Income:
Concentration risk percentage				5.00%	5.00%
Licensee Six [Member] | Sales [Member]
Revenue Recognition/Fee Income:
Concentration risk percentage					5.00%
Large Architectural Glass Project [Member] | Sales [Member]
Revenue Recognition/Fee Income:
Concentration risk percentage			14.00%
Company One [Member] | Accounts Receivable [Member]
Revenue Recognition/Fee Income:
Concentration risk percentage			21.00%	19.00%
Company Two [Member] | Accounts Receivable [Member]
Revenue Recognition/Fee Income:
Concentration risk percentage			15.00%	17.00%
Company Three [Member] | Accounts Receivable [Member]
Revenue Recognition/Fee Income:
Concentration risk percentage			12.00%	10.00%
Company Four [Member] | Accounts Receivable [Member]
Revenue Recognition/Fee Income:
Concentration risk percentage			11.00%	10.00%

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Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees.

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