Consolidated Balance Sheets (Unaudited) (USD $)	Sep. 30, 2011	Dec. 31, 2010
Current Assets:
Cash and cash equivalents	$ 24,574,858	$ 42,684,241
Short term investments	6,175,147	0
Accounts receivable, net of allowance of $200,000 at September 30, 2011 and December 31, 2010, respectively	12,525,734	13,542,535
Inventory	15,469,128	17,815,405
Prepaid expenses and other current assets	1,969,884	1,999,525
Deferred income tax assets, net	8,864,276	6,284,489
Total current assets	69,579,027	82,326,195
Property and equipment, net	29,821,661	35,905,765
Deferred income tax assets, net	13,819,753	13,919,753
Intangible assets, net	3,183,944	3,090,876
Other long-term assets	753,716	944,346
Total assets	117,158,101	136,186,935
Current Liabilities:
Accounts payable	5,147,800	4,550,789
Accrued liabilities	7,703,524	3,759,800
Current portion of deferred revenue	3,154,183	3,265,260
Customer deposits	207,974	372,145
Total current liabilities	16,213,481	11,947,994
Deferred revenue, net of current portion	4,219,021	4,392,860
Liability for unrecorded tax benefits	2,639,346	2,281,840
Total liabilities	23,071,848	18,622,694
Commitments and Contingencies
Stockholders' Equity
Preferred stock, $0.00001 par value per share; 25 million shares authorized; no shares issued and outstanding at September 30, 2011 and December 31, 2010, respectively
Common stock, $0.00001 par value per share; 200 million shares authorized; 56,767,754 and 62,621,268 shares issued and outstanding at September 30, 2011 and December 31, 2010, respectively	647	647
Additional paid-in capital	99,699,075	97,122,085
Treasury stock, 7,969,683 and 2,091,600 shares at September 30, 2011 and December 31, 2010, respectively	(39,597,054)	(14,708,237)
Retained earnings	34,046,376	35,185,191
Accumulated other comprehensive loss	(62,791)	(35,445)
Total stockholders' equity	94,086,253	117,564,241
Total liabilities and stockholders' equity	$ 117,158,101	$ 136,186,935