CONDENSED CONSOLIDATED BALANCE SHEETS (USD $)	Dec. 31, 2012	Sep. 30, 2012
Current assets:
Cash and cash equivalents	$ 16,311,106	$ 13,921,363
Marketable securities	6,739,272	6,779,695
Accounts receivable, less allowance for doubtful accounts of $72,725 at December 31, 2012 and $86,268 at September 30, 2012	9,458,473	11,008,429
Inventories	9,624,926	9,883,651
Prepaid expenses and other current assets	1,601,513	1,726,908
Deferred income tax asset	1,304,214	1,287,177
Total current assets	45,039,504	44,607,223
Property, plant and equipment:
Land and buildings	11,225,115	10,651,127
Equipment and fixtures	20,831,725	20,550,952
Property, plant and equipment	32,056,840	31,202,079
Less accumulated depreciation	(19,776,433)	(19,340,007)
Total property, plant and equipment	12,280,407	11,862,072
Deferred income tax asset	1,086,322	1,030,994
Goodwill	9,210,602	9,053,091
Other intangible assets, net	9,276,256	9,377,354
Total assets	76,893,091	75,930,734
Current liabilities:
Accounts payable	2,716,170	3,070,329
Accrued compensation	981,544	1,970,468
Accrued expenses	1,576,573	1,456,929
Total current liabilities	5,274,287	6,497,726
Long-term liabilities	1,164,819	1,137,212
Shareholders' equity:
Common stock, no par value: Authorized shares - 40,000,000 Issued and outstanding shares (12,202,050 at December 31, 2012; 12,120,050 at - September 30, 2012)	57,520,270	56,904,308
Retained earnings	16,326,003	15,313,858
Accumulated other comprehensive loss	(3,392,288)	(3,922,370)
Total shareholders' equity	70,453,985	68,295,796
Total liabilities and shareholders' equity	$ 76,893,091	$ 75,930,734