Accrued Liabilities (Tables)

6 Months Ended

Jun. 30, 2013

Accrued Liabilities [Abstract]

Schedule Of Accrued Liabilities

	June 30,	December 31,
	2013	2012
Accrued salaries, bonus, and benefits	$     2,247,842	$    2,123,167
Accrued rent	1,146,175	1,095,641
Accrued warranties	536,098	653,473
Accrued interest	515,009	469,049
Accrued licenses and maintenance fees	322,111	323,901
Other	869,769	696,579
Total accrued liabilities	$     5,637,004	$    5,361,810