Consolidated Balance Sheets (Current Period Unaudited) - USD ($)	Jun. 30, 2019	Dec. 31, 2018
ASSETS
Cash and cash equivalents	$ 8,580,564	$ 11,439,361
Accounts receivable, net	2,066,025	4,065,220
Contract assets	1,654,467	1,357,797
Inventories, net	1,882,666	1,861,873
Other current assets	509,806	723,204
Total Current Assets	14,693,528	19,447,455
Property, plant and equipment, net	31,317,156	30,402,558
Deferred income taxes	2,802,414	2,104,414
Other assets	41,748	64,583
Intangible assets, net	461,058	495,552
Total Assets	49,315,904	52,514,562
LIABILITIES AND STOCKHOLDERS’ EQUITY
Accounts payable	1,149,879	713,194
Accrued expenses	1,730,518	1,503,309
Current maturities of long-term debt	865,464	857,590
Contract Liabilities	170,975	536,524
Deferred revenue	482,677	459,899
Total Current Liabilities	4,399,513	4,070,516
Long-term debt, net of current portion	11,716,283	12,051,720
Total Long-Term Liabilities	11,716,283	12,051,720
Total Liabilities	16,115,796	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 June 30, 2019 and 6,535,888 at December 31, 2018	65,551	65,358
Additional paid-in capital	26,525,521	26,148,256
Retained earnings	6,609,036	10,178,712
Total Stockholders’ Equity	33,200,108	36,392,326
Total Liabilities and Stockholders’ Equity	$ 49,315,904	$ 52,514,562