Consolidated Statements of Income (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Sales revenues:
System sales	$ 79,792,563	$ 72,553,036	$ 70,643,877
Support and maintenance	71,505,736	67,293,101	64,152,937
Business management, consulting and managed IT services	49,565,033	43,463,266	38,679,530
Total sales revenues	200,863,332	183,309,403	173,476,344
Costs of sales:
System sales	47,839,794	49,018,946	47,602,817
Support and maintenance	28,639,891	27,710,252	25,844,109
Business management, consulting and managed IT services	30,646,789	25,919,236	20,618,213
Total costs of sales	107,126,474	102,648,434	94,065,139
Gross profit	93,736,858	80,660,969	79,411,205
Operating expenses:
Sales and marketing	14,737,440	14,290,061	13,413,587
General and administrative	28,755,477	25,093,527	24,702,679
Total operating expenses	43,492,917	39,383,588	38,116,266
Operating income	50,243,941	41,277,381	41,294,939
Other income:
Interest income	466,678	720,573	667,564
Total other income	466,678	720,573	667,564
Income before taxes	50,710,619	41,997,954	41,962,503
Provision for income taxes	17,967,381	12,024,482	16,129,113
Net income	$ 32,743,238	$ 29,973,472	$ 25,833,390
Net income per share - basic (in dollars per share)	$ 2.95	$ 2.71	$ 2.34
Net income per share - diluted (in dollars per share)	$ 2.95	$ 2.71	$ 2.34
Weighted average shares outstanding
Basic (in shares)	11,100,825	11,066,456	11,033,804
Diluted (in shares)	11,100,825	11,066,456	11,033,804