Consolidated Balance Sheets (Current Period Unaudited) - USD ($)	Mar. 31, 2019	Dec. 31, 2018
ASSETS
Cash and cash equivalents	$ 11,252,987	$ 11,439,361
Accounts receivable, net	2,103,823	4,065,220
Contract assets	1,088,913	1,357,797
Inventories, net	1,745,327	1,861,873
Other current assets	770,662	723,204
Total Current Assets	16,961,712	19,447,455
Property, plant and equipment, net	30,595,638	30,402,558
Deferred income taxes	2,563,414	2,104,414
Other assets	41,748	64,583
Intangible assets, net	465,905	495,552
Total Assets	50,628,417	52,514,562
LIABILITIES AND STOCKHOLDERS’ EQUITY
Accounts payable	779,893	713,194
Accrued expenses	1,540,630	1,503,309
Current maturities of long-term debt	860,948	857,590
Contract Liabilities	693,097	536,524
Deferred revenue	455,652	459,899
Total Current Liabilities	4,330,220	4,070,516
Long-term debt, net of current portion	11,883,947	12,051,720
Total Long-Term Liabilities	11,883,947	12,051,720
Total Liabilities	16,214,167	16,122,236
Commitments and contingencies
Stockholders’ Equity:
Common stock - $0.01 par value – 20,000,000 shares authorized; issued and outstanding 6,555,150 at March 31, 2019 and 6,535,888 at December 31, 2018	65,551	65,358
Additional paid-in capital	26,346,934	26,148,256
Retained earnings	8,001,765	10,178,712
Total Stockholders’ Equity	34,414,250	36,392,326
Total Liabilities and Stockholders’ Equity	$ 50,628,417	$ 52,514,562