Consolidated Balance Sheets (Unaudited) - USD ($)	Mar. 31, 2016	Dec. 31, 2015
Current Assets:
Cash and cash equivalents	$ 12,330,309	$ 13,073,331
Accounts receivable, net	3,389,954	3,091,251
Costs and estimated earnings in excess of billings on contracts in progress	4,325,998	4,635,018
Inventories, net	3,185,623	2,986,430
Restricted cash	200,000	200,000
Deferred income taxes-current	436,207	398,009
Other current assets	84,992	167,056
Total Current Assets	23,953,083	24,551,095
Property, plant and equipment, net	14,598,425	14,793,923
Construction in progress	56,946	33,306
Deferred income taxes – non-current	1,701,252	1,606,830
Other assets	81,471	86,215
Intangible assets, net	52,808	60,335
Total Assets	40,443,985	41,131,704
Current Liabilities:
Accounts payable	407,471	308,004
Accrued expenses	3,280,877	3,445,880
Current maturities of long-term debt	475,000	$ 580,000
Billings in excess of costs and estimated earnings on contracts in progress	29,961
Deferred revenue	10,198	$ 307,683
Total Current Liabilities	4,203,506	4,641,567
Long-term debt, net of current portion	3,190,508	3,265,508
Total Liabilities	$ 7,394,015	$ 7,907,075
Commitments and Contingencies
Stockholders’ Equity:
Common stock-$0.01 par value-10,000,000 shares authorized; issued and outstanding 6,218,205 at March 31, 2016 and 6,198,135 at December 31, 2015	$ 62,182	$ 61,981
Additional paid-in-capital	23,058,106	22,895,202
Retained earnings	9,929,682	10,267,446
Total Stockholders’ Equity	33,049,970	33,224,629
Total Liabilities and Stockholders’ Equity	$ 40,443,985	$ 41,131,704