Condensed Consolidated Balance Sheets (Unaudited) - USD ($)	Jun. 30, 2017	Dec. 31, 2016
Current assets
Cash and cash equivalents	$ 2,598,766	$ 3,522,620
Investment securities, available-for-sale, at fair value	1,077,769	1,050,220
Accounts receivable, net
Trade - billed (less allowance for doubtful accounts of $197,273 and $347,087)	9,252,048	7,187,630
Trade - unbilled	238,372	270,622
Inventories
Raw materials	793,355	642,467
Finished goods	2,650,266	1,936,350
Prepaid expenses and other assets	584,906	370,597
Refundable income taxes	82,710	251,115
Total current assets	17,278,192	15,231,621
Property and equipment, net	9,719,759	8,007,518
Other assets	154,344	173,086
Total assets	27,152,295	23,412,225
Current liabilities
Accounts payable - trade	2,480,166	2,139,760
Accrued expenses and other liabilities	693,189	293,641
Deferred Revenue, Current	1,396,621	724,442
Accrued compensation	581,770	882,749
Current maturities of notes payable	632,566	587,523
Customer deposits	1,221,522	431,480
Total current liabilities	7,005,834	5,059,595
Notes payable - less current maturities	3,197,478	3,345,511
Deferred tax liability	793,000	764,000
Total liabilities	10,996,312	9,169,106
Commitments and contingencies	0	0
Stockholders’ equity
Preferred stock, $.01 par value; authorized 1,000,000 shares, none issued and outstanding	0	0
Common stock, $.01 par value; authorized 8,000,000 shares; 5,216,148 and 5,085,348 issued and 5,013,228 and 4,941,428 outstanding, respectively	50,811	49,823
Additional paid-in capital	5,528,442	5,192,339
Treasury stock, at cost, 40,920 shares	(102,300)	(102,300)
Accumulated other comprehensive loss, net	(17,993)	(24,913)
Retained earnings	10,697,023	9,128,170
Total stockholders’ equity	16,155,983	14,243,119
Total liabilities and stockholders' equity	$ 27,152,295	$ 23,412,225