Accrued liabilities

9 Months Ended

Sep. 30, 2011

Accrued liabilities [Abstract]

Accrued liabilities

5. Accrued liabilities

Accrued liabilities consisted of the following at September 30, 2011 and December 31, 2010:

	September 30, 2011		December 31, 2010
Accrued salaries and benefits	$	1,520,079	$	1,411,716
Accrued litigation judgment expense		3,300,000		—
Accrued expenses		1,972,336		1,668,477
Accrued warranty expense		438,942		646,113
Accrued income tax		472,167		33,494
	$	7,703,524	$	3,759,800