CONDENSED BALANCE SHEETS - USD ($)	Jun. 30, 2016	Dec. 31, 2015
CURRENT ASSETS:
Cash and cash equivalents	$ 800,889	$ 2,248,466
Short-term investments	3,399,000
Trade receivables, less allowance of $60,000 in 2016 and $122,000 in 2015	1,811,231	2,165,194
Inventories	2,215,548	2,119,805
Prepaid expenses and other assets	141,273	85,648
Income taxes receivable	131,894	102,778
Total current assets	8,499,835	6,721,891
PROPERTY, PLANT, AND EQUIPMENT, at cost:
Land and building	9,383,591	6,391,555
Machinery and equipment	4,873,106	4,275,910
Office equipment	961,770	933,596
Vehicles	272,144	272,141
Construction in progress	361,381	2,491,432
Gross property, plant, and equipment, at cost	15,851,992	14,364,634
Less accumulated depreciation	(6,691,206)	(6,407,304)
Net property, plant, and equipment, at cost	9,160,786	7,957,330
INTANGIBLE ASSETS, less accumulated amortization of $136,113 in 2016 and $123,957 in 2015	346,335	336,096
Total assets	18,006,956	15,015,317
CURRENT LIABILITIES:
Current portion of long-term debt	125,529
Accounts payable - Trade	510,715	420,245
Accounts payable - Construction	60,166	333,339
Accrued compensation	308,707	350,518
Other accrued liabilities	118,025	31,000
Total current liabilities	1,123,142	1,135,102
LONG-TERM LIABILITIES
Long-term debt less current portion	3,141,424
Deferred income taxes	385,000	385,000
Total long-term liabilities	3,526,424	385,000
Total liabilities	4,649,566	1,520,102
COMMITMENTS AND CONTINGENCIES
STOCKHOLDERS' EQUITY:
Preferred stock, par value $.10 per share; authorized 250,000 shares: issued none
Common stock, par value $.10 per share; authorized 4,750,000 shares; issued and outstanding 2,018,753 shares in 2016 and 2,018,253 in 2015	201,875	201,825
Additional paid-in capital	2,718,762	2,703,050
Retained earnings	10,436,753	10,590,340
Total stockholders' equity	13,357,390	13,495,215
Total liabilities and stockholders' equity	$ 18,006,956	$ 15,015,317