Consolidated Balance Sheets (Current Period Unaudited) (USD $)	Mar. 31, 2015	Dec. 31, 2014
Current Assets:
Cash and cash equivalents	$ 7,500,440	$ 11,966,863
Accounts receivable, net	8,126,558	6,463,050
Costs and estimated earnings in excess of billings on contracts in progress	3,451,142	2,498,662
Inventories, net	4,702,469	4,842,059
Deferred income taxes-current	2,012,199	2,887,960
Other current assets	71,732	194,756
Total Current Assets	25,864,540	28,853,350
Property, plant and equipment, net	15,295,179	15,025,283
Construction in progress	16,431	389,276
Deferred income taxes – non-current	910,077	750,133
Restricted cash	400,000	400,000
Other assets	81,921	82,559
Intangible assets, net	59,261	55,871
Total Assets	42,627,409	45,556,472
Current Liabilities:
Accounts payable	1,628,969	1,682,838
Accrued expenses	3,822,207	3,297,052
Current maturities of long-term debt	720,000	720,000
Billings in excess of costs and estimated earnings on contracts in progress	2,502,956	1,328,508
Deferred revenue	155,452	488,691
Accrued loss on litigation settlement		4,925,000
Total Current Liabilities	8,829,584	12,442,089
Long-term debt, net of current portion	3,665,507	3,845,508
Total Liabilities	12,495,091	16,287,597
Commitments and Contingencies
Stockholders’ Equity:
Common stock-$0.01 par value-10,000,000 shares authorized; issued and outstanding 6,169,227 at March 31, 2015 and 6,162,027 at December 31, 2014	61,692	61,620
Additional paid-in-capital	22,339,954	22,144,805
Retained earnings	7,730,672	7,062,450
Total Stockholders’ Equity	30,132,318	29,268,875
Total Liabilities and Stockholders’ Equity	$ 42,627,409	$ 45,556,472