CONDENSED CONSOLIDATED BALANCE SHEETS (USD $)	Mar. 31, 2013	Sep. 30, 2012
Current assets:
Cash and cash equivalents	$ 16,291,745	$ 13,921,363
Marketable securities	6,499,900	6,779,695
Accounts receivable, less allowance for doubtful accounts of $29,235 at March 31, 2013 and $86,268 at September 30, 2012	10,776,753	11,008,429
Inventories	9,265,672	9,883,651
Prepaid expenses and other current assets	1,905,531	1,726,908
Deferred income tax asset	1,327,652	1,287,177
Total current assets	46,067,253	44,607,223
Property, plant and equipment:
Land and buildings	11,810,132	10,651,127
Equipment and fixtures	21,114,410	20,550,952
Property, plant and equipment	32,924,542	31,202,079
Less accumulated depreciation	(20,155,389)	(19,340,007)
Total property, plant and equipment	12,769,153	11,862,072
Deferred income tax asset	1,088,406	1,030,994
Goodwill	8,785,417	9,053,091
Other intangible assets, net	8,806,573	9,377,354
Total assets	77,516,802	75,930,734
Current liabilities:
Accounts payable	2,252,362	3,070,329
Accrued compensation	1,517,815	1,970,468
Accrued expenses	2,017,458	1,456,929
Total current liabilities	5,787,635	6,497,726
Long-term liabilities	1,128,641	1,137,212
Shareholders' equity:
Common stock, no par value: Authorized shares - 40,000,000 Issued and outstanding shares (12,327,143 at March 31, 2013; 12,120,050 at September 30, 2012)	58,096,093	56,904,308
Retained earnings	17,525,253	15,313,858
Accumulated other comprehensive loss	(5,020,820)	(3,922,370)
Total shareholders' equity	70,600,526	68,295,796
Total liabilities and shareholders' equity	$ 77,516,802	$ 75,930,734