Accrued Liabilities

6 Months Ended

Jun. 30, 2012

Accrued liabilities [Abstract]

Accrued liabilities

5. Accrued liabilities

Accrued liabilities consisted of the following at June 30, 2012 and December 31, 2011:

	June 30, 2012		December 31, 2011
Accrued expenses	$	2,660,111	$	2,224,398
Accrued salaries and benefits		1,674,266		1,549,659
Accrued litigation judgment expense		1,100,000		3,300,000
Accrued income tax		787,801		141,488
Accrued warranty expense		360,107		427,459
Accrued liabilities	$	6,582,285	$	7,643,004