Condensed Consolidated Balance Sheets (Unaudited) - USD ($)	Mar. 31, 2017	Dec. 31, 2016
Current assets
Cash and cash equivalents	$ 4,423,650	$ 3,522,620
Investment securities, available-for-sale, at fair value	1,060,116	1,050,220
Accounts receivable, net
Trade - billed (less allowance for doubtful accounts of $193,872 and $347,087)	5,793,791	7,187,630
Trade - unbilled	362,740	270,622
Inventories
Raw materials	587,726	642,467
Finished goods	3,207,325	1,936,350
Prepaid expenses and other assets	469,490	370,597
Refundable income taxes	0	251,115
Deferred taxes	0	640,000
Total current assets	15,904,838	15,871,621
Property and equipment, net	8,460,394	8,007,518
Other assets	163,193	173,086
Total assets	24,528,425	24,052,225
Current liabilities
Accounts payable - trade	1,738,082	2,139,760
Accrued expenses and other liabilities	974,606	1,018,083
Accrued compensation	622,637	882,749
Income taxes payable	60,619	0
Current maturities of notes payable	627,094	587,523
Customer deposits	903,233	431,480
Total current liabilities	4,926,271	5,059,595
Notes payable - less current maturities	3,348,408	3,345,511
Deferred tax liability	939,000	1,404,000
Total liabilities	9,213,679	9,809,106
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; 5,192,148 and 5,085,348 issued and 5,030,148 and 4,941,428 outstanding, respectively	50,436	49,823
Additional paid-in capital	5,405,005	5,192,339
Treasury stock, at cost, 40,920 shares	(102,300)	(102,300)
Accumulated other comprehensive loss, net	(23,766)	(24,913)
Retained earnings	9,985,371	9,128,170
Total stockholders’ equity	15,314,746	14,243,119
Total liabilities and stockholders' equity	$ 24,528,425	$ 24,052,225