CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($)	12 Months Ended
	Aug. 31, 2019	Aug. 31, 2018	Aug. 31, 2017
Cash flows from operating activities
Net income	$ 8,583,329	$ 8,934,812	$ 5,787,597
Adjustments to reconcile net income to net cash provided by operating activities
Depreciation and amortization	2,750,245	2,721,304	2,135,078
Change in value of contingent consideration	109,060	152,752	38,188
Stock-based compensation	1,077,837	709,083	621,781
Deferred income taxes	(299,096)	(1,731,821)	(178,374)
(Increase) decrease in
Accounts receivable	487,970	(1,465,803)	(876,231)
Revenues in excess of billings	(1,248,063)	(504,514)	(634,409)
Prepaid income taxes	(452,517)	149,850	93,043
Prepaid expenses and other assets	(93,877)	(153,682)	40,528
Increase (decrease) in
Accounts payable	(147,529)	110,713	99,337
Accrued payroll and other expenses	486,862	168,883	283,831
Billings in excess of revenues	413,946	167,645	(118,061)
Accrued income taxes	0	0	(153,713)
Other liabilities	0	0	(8,274)
Deferred revenue	(29,747)	27,966	(252,582)
Net cash provided by operating activities	11,638,420	9,287,188	6,877,739
Cash flows from investing activities
Purchases of property and equipment	(137,745)	(183,291)	(175,961)
Purchases of intellectual property	(50,000)	0	0
Cash used to acquire subsidiaries	0	0	(4,515,982)
Cash received in acquisition	0	0	1,720,434
Capitalized computer software development costs	(1,767,996)	(2,145,429)	(1,383,711)
Net cash used in investing activities	(1,955,741)	(2,328,720)	(4,355,220)
Cash flows from financing activities
Payment of dividends	(4,197,055)	(4,161,740)	(3,448,489)
Payments on contracts payable	(4,238,973)	(247,328)	(1,000,000)
Proceeds from the exercise of stock options	788,147	635,583	111,404
Net cash used in financing activities	(7,647,881)	(3,773,485)	(4,337,085)
Net increase (decrease) in cash and cash equivalents	2,034,798	3,184,983	(1,814,566)
Cash and cash equivalents, beginning of year	9,400,701	6,215,718	8,030,284
Cash and cash equivalents, end of period	11,435,499	9,400,701	6,215,718
Supplemental disclosures of cash flow information
Income taxes paid	2,673,475	2,712,988	2,687,921
Non-Cash Investing and Financing Activities
Creation of contract liabilities for acquisition of subsidiaries	$ 0	$ 0	$ 5,738,188