Accrued Liabilities (Schedule Of Accrued Liabilities) (Details) (USD $)	3 Months Ended
	Mar. 31, 2015 sqft	Sep. 30, 2013 sqft	Dec. 31, 2014	Dec. 31, 2013
Accrued Liabilities [Abstract]
Accrued salaries, bonus, and benefits	$ 2,164,991		$ 2,557,557
Accrued rent	1,400,828		1,407,740
Accrued license and maintenance fees	660,743		661,766
Accrued interest	491,768		493,616
Accrued warranties	334,873		364,548	501,212
Accrued taxes	345,406		332,364
Other	182,558		102,479
Total accrued liabilities	5,581,167		5,920,070
Less: Long term accrued liabilities	(339,246)		(414,928)
Total current accrued liabilities	5,241,921		5,505,142
Square feet of office leased space	52,000
Square feet of demonstration and assembly leased space	12,000
Square feet of terminated unimproved space leased space		13,000
Accrued lease termination costs, additions		515,138
Accrued lease termination costs	$ 337,208