Consolidated Balance Sheets (Current Period Unaudited) - USD ($)	Jun. 30, 2018	Dec. 31, 2017
Current Assets:
Cash and cash equivalents	$ 15,396,489	$ 14,210,909
Accounts receivable, net	2,722,481	2,058,617
Contract assets	5,314,216	8,397,024
Inventories	2,648,020	2,965,623
Other current assets	245,624	167,425
Total Current Assets	26,326,830	27,799,598
Property, plant and equipment, net	29,721,708	28,839,457
Deferred income taxes	1,552,298	1,609,186
Deposits	241,159	63,370
Other assets	1,779	4,477
Intangible assets, net	512,308	662,162
Total Assets	58,356,082	58,978,250
Current Liabilities:
Accounts payable	1,227,258	1,174,968
Accrued expenses	2,105,933	2,738,373
Current maturities of long-term debt	654,255	647,324
Current portion acquisition related contingent payments	100,000	100,000
Contract liabilities	279,263	466,313
Deferred revenue	1,107,591	291,953
Total Current Liabilities	5,474,300	5,418,931
Long-term acquisition related contingent payments	200,000	200,000
Long-term debt, net of current portion	12,376,253	12,705,683
Total Long-Term liabilities	12,576,253	12,905,683
Total Liabilities	18,050,553	18,324,614
Commitments and Contingencies
Stockholders’ Equity
Common stock - $0.01 par value – 20,000,000 shares authorized; issued and outstanding, 6,486,189 at June 30, 2018 and 6,458,714 at December 31, 2017	64,862	64,587
Additional paid-in-capital	25,633,056	25,209,316
Retained earnings	14,607,611	15,379,733
Total Stockholders’ Equity	40,305,529	40,653,636
Total Liabilities and Stockholders’ Equity	$ 58,356,082	$ 58,978,250