Consolidated Balance Sheets (USD $)	Dec. 31, 2012	Dec. 31, 2011
Current assets
Cash and cash equivalents	$ 3,896,087	$ 3,858,544
Accounts receivable, net of allowance for doubtful accounts of $27,417 and $29,361, respectively	877,275	585,593
Inventories	5,084,900	6,448,934
Deferred income taxes	462,088	460,868
Prepaid expenses and other current assets	833,458	623,288
Total current assets	11,153,808	11,977,227
Property and equipment, net of accumulated depreciation	4,488,374	4,486,771
Goodwill, net of accumulated amortization	2,298,020	2,286,859
Other intangible assets, net of accumulated amortization	43,936	49,894
Other assets	30,283	24,995
Total assets	18,014,421	18,825,746
Current liabilities
Accounts payable, trade	1,495,194	2,170,690
Accrued liabilities	1,111,131	1,065,840
Current maturities of long-term obligations	196,678	182,056
Deferred revenue	3,230,506	2,990,333
Total current liabilities	6,033,509	6,408,919
Long-term obligations, less current maturities	1,348,821	1,545,499
Deferred income taxes	1,116,593	1,007,977
Commitments and contingencies
Shareholders' equity
Common stock, $0.001 par value; authorized 50,000,000 shares; 22,228,834 shares issued and outstanding in 2012 and 2011	22,229	22,229
Additional paid-in capital	13,688,730	13,650,414
Accumulated deficit	(4,314,278)	(3,952,842)
Accumulated other comprehensive income	118,817	143,550
Total shareholders' equity	9,515,498	9,863,351
Total liabilities and shareholders' equity	$ 18,014,421	$ 18,825,746