Consolidated Balance Sheets (Current Period Unaudited) - USD ($)	Jun. 30, 2017	Dec. 31, 2016
ASSETS
Cash and cash equivalents	$ 21,477,068	$ 21,677,186
Accounts receivable, net	1,852,047	607,522
Costs and estimated earnings in excess of billings on contracts in progress	3,027,086	2,596,518
Inventories	3,101,557	3,286,539
Other current assets	344,025	235,537
Total Current Assets	29,801,783	28,403,302
Property, plant and equipment, net	14,122,984	14,344,924
Construction in progress	156,518	94,058
Deferred income taxes	1,952,296	2,440,334
Other assets	271,665	68,450
Intangible assets, net	240,304	253,624
Total Assets	46,545,550	45,604,692
LIABILITIES AND STOCKHOLDERS’ EQUITY
Accounts payable	1,173,384	743,132
Accrued expenses	2,121,702	1,942,818
Current maturities of long-term debt	300,000	300,000
Billings in excess of costs and estimated earnings on contracts in progress	2,984,621	5,262,339
Deferred revenue	98,509	77,633
Total Current Liabilities	6,678,216	8,325,922
Long-term debt, net of current portion	2,815,508	2,965,508
Total Liabilities	9,493,724	11,291,430
Commitments and Contingencies	0	0
Stockholders’ Equity
Common stock - $0.01 par value – 20,000,000 shares authorized; issued and outstanding, 6,381,200 at June 30, 2017 and 6,346,590 at December 31, 2016	63,812	63,466
Additional paid-in-capital	24,588,783	24,131,474
Retained earnings	12,399,231	10,118,322
Total Stockholders’ Equity	37,051,826	34,313,262
Total Liabilities and Stockholders’ Equity	$ 46,545,550	$ 45,604,692