Consolidated Balance Sheets (USD $)	Dec. 31, 2013	Dec. 31, 2012
Current assets:
Cash	$ 157,787	$ 144,354
Accounts receivable - net	1,268,788	1,080,362
Inventories	337,822	460,839
Assets held for resale		259,579
Prepaid expenses	472,065	379,669
Deferred tax asset - current portion	1,250,000	1,400,000
Total current assets	3,486,462	3,724,803
Property and equipment:
Equipment	1,361,205	1,166,103
Leasehold improvements	88,718	12,283
Total	1,449,923	1,178,386
Less accumulated depreciation and amortization	962,502	905,376
Net property and equipment	487,421	273,010
Deferred tax asset (net of current portion)	9,332,024	9,238,536
Other assets including long-term portion of notes receivable - net	3,067,754	3,924,404
Total assets	16,373,661	17,160,753
Current liabilities:
Current portion of long-term note payable to bank	1,216,250	1,250,000
Accounts payable and accrued expenses	818,803	510,710
Total current liabilities	2,035,053	1,760,710
Long-term obligations:
Note payable to bank (net of current portion)	2,635,208	3,020,833
Total long-term liabilities	2,635,208	3,020,833
Stockholders' equity:
Common stock - no par value (25,000,000 shares authorized, 19,516,589 issued and outstanding as of December 31, 2012 and 19,585,089 as of December 31, 2013)	23,498,401	23,366,058
Preferred stock (5,000,000 shares authorized, 20,625 issued and outstanding as of December 31, 2012 and none outstanding as of December 31, 2013)		800,250
Accumulated deficit	(11,795,001)	(11,787,098)
Total stockholders' equity	11,703,400	12,379,210
Total liabilities and stockholders' equity	$ 16,373,661	$ 17,160,753