Condensed Consolidated Balance Sheets (Current Period Unaudited) (USD $)	Jun. 30, 2014	Dec. 31, 2013
Current assets:
Cash and cash equivalents	$ 5,453,386	$ 4,132,953
Marketable securities, current		205,000
Trade accounts receivable, less allowance for doubtful accounts of $298,235 in 2014 and $315,417 in 2013	10,498,008	12,335,124
Other receivables	389,291	273,405
Inventories	8,498,018	7,470,697
Prepaid income taxes	548,704	595,898
Prepaid expenses, other	1,113,502	1,126,582
Deferred income taxes	1,176,862	1,429,794
Total current assets	27,677,771	27,569,453
Property, plant and equipment, net of accumulated depreciation of $8,283,620 in 2014 and $7,811,276 in 2013	5,912,479	5,726,754
Goodwill	8,970,733	9,034,479
Investment in affiliated company	3,411,251	3,441,500
Intangible assets, net	12,325,049	12,718,203
Other assets	203,583	213,279
TOTAL ASSETS	58,500,866	58,703,668
Current liabilities:
Current maturities of notes payable	1,892,812	2,697,678
Revolving lines of credit	4,848,752	4,263,821
Accounts payable	3,412,024	3,864,355
Compensation and related expenses	3,510,191	3,752,542
Other accrued expenses	853,273	781,151
Accrued product warranties	230,687	335,533
Dividends payable	622,856	619,322
Deferred revenue	1,440,226	620,428
Total current liabilities	16,810,821	16,934,830
Notes payable	762,104	1,306,849
Obligations to former employees	76,657	77,334
Deferred income taxes	2,198,527	2,611,491
Accrued income taxes	319,910	304,424
Total noncurrent liabilities	3,357,198	4,300,098
Total liabilities	20,168,019	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 5,662,326 shares in 2014 and 5,630,197 shares in 2013	566,233	563,020
Additional paid-in capital	5,529,125	5,063,627
Retained earnings	31,878,285	31,229,068
Accumulated other comprehensive income	359,204	613,025
Total stockholders' equity	38,332,847	37,468,740
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY	$ 58,500,866	$ 58,703,668