STATEMENTS OF CASH FLOWS - USD ($)	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Cash flows from operating activities:
Net income	$ 52,443	$ 513,186
Adjustments to reconcile net income to net cash provided by operating activities:
Deferred income taxes	2,949	42,501
Depreciation and amortization	200,136	218,621
Realized loss on marketable securities	5,063	0
Stock-based compensation	139,673	127,839
Unrealized loss on marketable securities	0	42,753
Deferred rent	8,260	1,768
Tax benefits from stock option plans	0	(31,912)
Changes in operating assets and liabilities:
Accounts receivable, net	(163,248)	151,282
Other current assets	68,614	(100,164)
Other assets	10,236	(10,317)
Deferred revenue	652,194	(176,072)
Accounts payable	18,458	(58,991)
Accrued expenses	40,809	10,351
Net cash provided by operating activities	1,035,587	730,845
Cash flows from investing activities:
Sale of marketable securities	240,411	1,075,212
Purchase of property and equipment	(235,434)	(276,308)
Net cash provided by investing activities	4,977	798,904
Cash flows from financing activities:
Dividend paid to stockholders	(536,120)	(412,402)
Settlement of fractional shares in stock split paid to stockholders	0	(411)
Proceeds from exercise of stock options	0	39,583
Tax benefit from stock option plans	0	31,912
Net cash used in financing activities	(536,120)	(341,318)
Net increase in cash and cash equivalents	504,444	1,188,431
Cash and cash equivalents at beginning of year	8,717,899	7,529,468
Cash and cash equivalents at end of year	9,222,343	8,717,899
Cash paid during the year for:
Income taxes	$ 74,356	$ 455,356