Condensed Consolidated Balance Sheets (Current Period Unaudited) (USD $)	Sep. 30, 2014	Dec. 31, 2013
Current assets:
Cash and cash equivalents	$ 6,140,566	$ 4,132,953
Marketable securities, current		205,000
Trade accounts receivable, less allowance for doubtful accounts of $203,559 in 2014 and $315,417 in 2013	10,461,565	12,335,124
Other receivables	225,930	273,405
Inventories	8,551,490	7,470,697
Prepaid income taxes	239,610	595,898
Prepaid expenses, other	1,135,754	1,126,582
Deferred income taxes	1,176,862	1,429,794
Total current assets	27,931,777	27,569,453
Property, plant and equipment, net of accumulated depreciation of $8,206,401 in 2014 and $7,811,276 in 2013	5,734,893	5,726,754
Goodwill	8,443,000	9,034,479
Investment in affiliated company	3,171,250	3,441,500
Intangible assets, net	11,341,704	12,718,203
Other assets	196,805	213,279
TOTAL ASSETS	56,819,429	58,703,668
Current liabilities:
Current maturities of notes payable	1,819,312	2,697,678
Revolving lines of credit	4,500,000	4,263,821
Accounts payable	3,635,323	3,864,355
Compensation and related expenses	3,538,071	3,752,542
Other accrued expenses	952,680	781,151
Accrued product warranties	240,575	335,533
Dividends payable	624,062	619,322
Deferred revenue	1,176,187	620,428
Total current liabilities	16,486,210	16,934,830
Notes payable	541,033	1,306,849
Obligations to former employees	71,261	77,334
Deferred income taxes	1,904,446	2,611,491
Accrued income taxes	295,353	304,424
Total noncurrent liabilities	2,812,093	4,300,098
Total liabilities	19,298,303	21,234,928
Capital stock – undesignated. Authorized 3,000,000 shares; none issued and outstanding in 2014 and 2013
Common stock – $0.10 par value. Authorized 22,000,000 shares; issued and outstanding 5,673,293 shares in 2014 and 5,630,197 shares in 2013	567,329	563,020
Additional paid-in capital	5,773,400	5,063,627
Retained earnings	32,928,040	31,229,068
Accumulated other comprehensive (loss) income	(1,747,643)	613,025
Total stockholders' equity	37,521,126	37,468,740
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY	$ 56,819,429	$ 58,703,668