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Consolidated Balance Sheets (Current Period Unaudited) - USD ($)
Sep. 30, 2018
Dec. 31, 2017
Current Assets:    
Cash and cash equivalents $ 14,192,180 $ 14,210,909
Accounts receivable, net 2,587,367 2,058,617
Contract assets 2,551,155 8,397,024
Inventories 2,751,504 2,965,623
Prepaid expenses and other current assets 537,683 167,425
Total Current Assets 22,619,889 27,799,598
Property, plant and equipment, net 30,272,974 28,839,457
Deferred income taxes 1,925,108 1,609,186
Deposits 71,875 67,847
Intangible assets, net 520,220 662,162
Total Assets 55,410,066 58,978,250
Current Liabilities:    
Accounts payable 1,261,385 1,174,968
Accrued expenses 1,777,662 2,738,373
Current maturities of long-term debt 657,811 647,324
Current portion acquisition related contingent payments 100,000 100,000
Contract liabilities 229,216 466,313
Deferred revenue 890,447 291,953
Total Current Liabilities 4,916,521 5,418,931
Long-term acquisition related contingent payments 200,000 200,000
Long-term debt, net of current portion 12,211,266 12,705,683
Total Long-Term liabilities 12,411,266 12,905,683
Total Liabilities 17,327,787 18,324,614
Commitments and Contingencies
Stockholders’ Equity    
Common stock - $0.01 par value – 20,000,000 shares authorized; issued and outstanding, 6,496,332 at September 30, 2018 and 6,458,714 at December 31, 2017 64,963 64,587
Additional paid-in-capital 25,912,507 25,209,316
Retained earnings 12,104,809 15,379,733
Total Stockholders’ Equity 38,082,279 40,653,636
Total Liabilities and Stockholders’ Equity $ 55,410,066 $ 58,978,250