Condensed Consolidated Balance Sheets (USD $)	Dec. 31, 2011	Sep. 30, 2011
Current assets:
Cash and cash equivalents	$ 8,337,578	$ 8,722,935
Marketable securities	25,218,950	26,182,308
Accounts receivable, net	8,455,770	8,644,332
Inventories, net	11,670,635	11,278,694
Prepaid expenses and other current assets	1,663,245	1,361,259
Deferred income tax asset	1,992,998	1,618,495
Total current assets	57,339,176	57,808,023
Property, plant and equipment:
Land and buildings	10,565,607	10,571,723
Equipment and fixtures	20,047,893	19,531,006
Property, plant and equipment	30,613,500	30,102,729
Less accumulated depreciation	(18,441,888)	(18,050,044)
Total property, plant and equipment	12,171,612	12,052,685
Deferred income tax asset	1,167,763	1,242,010
Goodwill	9,569,190	9,764,075
Finite life intangibles, net	9,860,980	10,272,671
Total assets	90,108,721	91,139,464
Current liabilities:
Accounts payable	2,651,057	2,773,398
Accrued compensation	945,313	1,460,726
Accrued expenses	1,601,291	1,500,544
Current maturities of debt	18,330,905	17,862,185
Total current liabilities	23,528,566	23,596,853
Deferred tax liabilities	1,806,711	1,565,764
Shareholders' equity:
Common stock, no par value: Authorized shares - 40,000,000 Issued and outstanding shares (12,043,167 at - December 31, 2011; 12,141,817 at - September 30, 2011)	56,169,621	56,829,350
Retained earnings	13,188,026	13,263,374
Accumulated other comprehensive loss	(4,584,203)	(4,115,877)
Total shareholders' equity	64,773,444	65,976,847
Total liabilities and shareholders' equity	$ 90,108,721	$ 91,139,464