Consolidated Balance Sheets (Unaudited) (USD $)	Sep. 30, 2013	Dec. 31, 2012
Current Assets:
Cash and cash equivalents	$ 10,715,065	$ 13,721,324
Accounts receivable, net	5,387,947	4,515,124
Costs and estimated earnings in excess of billings on uncompleted contracts	2,323,682	2,730,104
Inventories	3,099,101	2,742,905
Deferred income taxes – current	878,475	189,153
Other current assets	183,587	192,438
Total Current Assets	22,587,857	24,091,048
Property, plant and equipment, net	15,561,217	12,894,154
Construction in progress	6,533	4,051,573
Deferred income taxes – non-current	386,433	568,744
Restricted cash	800,000	800,000
Other assets	66,494	78,128
Intangible assets, net	42,442	41,614
Total Assets	39,450,976	42,525,261
Current Liabilities:
Current maturities of long-term debt	720,000	935,822
Billings in excess of costs and estimated earnings on uncompleted contracts	5,337	475,905
Accounts payable and accrued expenses	2,347,652	2,243,447
Deferred revenue	266,107	335,404
Total Current Liabilities	3,339,096	3,990,578
Long-term debt, net of current portion	4,745,508	7,387,019
Total Liabilities	8,084,604	11,377,597
Commitments and Contingencies
Stockholders’ Equity
Common stock - $0.01 par value – 10,000,000 shares authorized; issued and outstanding, 6,072,245 at September 30, 2013 and 6,046,970 at December 31, 2012	60,722	60,470
Additional paid-in-capital	21,214,156	20,990,891
Retained earnings	10,091,494	10,096,303
Total Stockholders’ Equity	31,366,372	31,147,664
Total Liabilities and Stockholders’ Equity	$ 39,450,976	$ 42,525,261