Condensed Consolidated Balance Sheets (USD $)	Sep. 30, 2013	Dec. 31, 2012
Current assets:
Cash and cash equivalents	$ 4,331,173	$ 3,896,087
Accounts receivable, net of allowance for doubtful accounts of $30,137 and $29,361, respectively	1,008,474	877,275
Inventories	4,958,089	5,084,900
Deferred income taxes	450,460	462,088
Prepaid expenses and other current assets	1,445,939	833,458
Total current assets	12,194,135	11,153,808
Property and equipment, net	4,059,804	4,488,374
Goodwill, net	2,280,874	2,298,020
Intangible assets, net	39,468	43,936
Other assets	265,375	30,283
Total assets	18,839,656	18,014,421
Current liabilities:
Accounts payable, trade	1,584,585	1,495,194
Accrued liabilities	1,292,636	1,111,131
Current maturities of long-term obligations	208,410	196,678
Deferred revenue	4,315,265	3,230,506
Total current liabilities	7,400,896	6,033,509
Long-term obligations, less current maturities	1,191,014	1,348,821
Deferred income taxes	1,018,974	1,116,593
Shareholders' equity:
Common stock, $0.001 par value; 50,000,000 shares authorized; 22,228,834 shares issued and outstanding at June 30, 2012 and December 31, 2011	2,212	2,223
Additional paid-in capital	13,705,163	13,708,736
Accumulated deficit	(4,614,327)	(4,314,278)
Accumulated other comprehensive income	135,724	118,817
Total shareholders' equity	9,228,772	9,515,498
Total liabilities and shareholders' equity	$ 18,839,656	$ 18,014,421