Condensed Consolidated Balance Sheets (Unaudited) - USD ($)		Jun. 30, 2016	Dec. 31, 2015
Current Assets:
Cash and cash equivalents		$ 907,384	$ 800,894
Certificates of deposit		6,565,000	6,565,000
Accounts receivable, net	[1]	6,278,622	5,438,332
Inventories, net		4,991,208	4,538,212
Prepaid income taxes			273,112
Other current assets		319,604	383,953
Total current assets		19,061,818	17,999,503
Property, Plant and Equipment:
Land		923,587	923,587
Land improvements		501,102	358,395
Buildings and improvements		7,478,507	7,271,006
Production equipment and other		33,613,257	33,295,529
Property, Plant and Equipment Gross		42,516,453	41,848,517
Less accumulated depreciation		30,488,131	30,150,074
Net property, plant and equipment		12,028,322	11,698,443
Total assets		31,090,140	29,697,946
Current Liabilities:
Accounts payable		1,240,204	768,111
Accrued wages and salaries		892,712	611,484
Other accrued expenses		470,217	465,662
Unearned revenue and customer deposits		263,732	467,189
Total current liabilities		2,866,865	2,312,446
Deferred income taxes		879,084	894,084
Total liabilities		3,745,949	3,206,530
Shareholders' Equity:
Preferred stock	[2]	0	0
Common stock	[3]	1,138,096	1,138,096
Additional paid-in capital		447,134	447,134
Retained earnings		29,681,059	28,828,284
Less: Treasury stock	[4]	3,922,098	3,922,098
Total shareholders' equity		27,344,191	26,491,416
Total liabilities and shareholders' equity		$ 31,090,140	$ 29,697,946

[1] Net of allowance of $150,000.

[2] No par value, 500,000 shares authorized, none outstanding.

[3] $1.00 par value, 4,000,000 shares authorized, 1,138,096 shares issued, 966,132 shares outstanding.

[4] At cost, 171,964 shares.