CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	12 Months Ended
	Aug. 31, 2021	Aug. 31, 2020	Aug. 31, 2019
Cash flows from operating activities
Net income	$ 9,782	$ 9,332	$ 8,583
Adjustments to reconcile net income to net cash provided by operating activities
Depreciation and amortization	3,590	2,962	2,750
Change in value of contingent consideration	486	203	109
Amortization of investment premiums	2,350	0	0
Stock-based compensation	2,750	1,577	1,078
Deferred income taxes	(628)	(378)	(299)
Currency translation adjustments	(101)	0	0
Increase (decrease) in
Accounts receivable	(2,429)	(2,018)	488
Revenues in excess of billings	(57)	140	(1,248)
Prepaid income taxes	(42)	(12)	(453)
Prepaid expenses and other assets	(100)	(399)	(94)
Accounts payable	39	221	(148)
Accrued payroll and other expenses	3,353	23	487
Billings in excess of revenues	(24)	(658)	414
Deferred revenue	234	(81)	(30)
Net cash provided by operating activities	19,203	10,912	11,637
Cash flows from investing activities
Purchases of property and equipment	(1,627)	(231)	(138)
Purchases of intellectual property	0	0	(50)
Purchase of short-term investments	(122,395)	(67,249)	0
Proceeds from sale of short-term investments	100,229	0	0
Cash used to acquire subsidiaries	0	(9,471)	0
Cash received in acquisition	0	3,799	0
Capitalized computer software development costs	(2,949)	(2,353)	(1,768)
Net cash used in investing activities	(26,742)	(75,505)	(1,956)
Cash flows from financing activities
Payment of dividends	(4,811)	(4,250)	(4,197)
Payments on contracts payable	(1,334)	(1,761)	(4,239)
Proceeds from the exercise of stock options	1,461	630	788
Proceeds from follow-on public offering, net	0	107,747	0
Net cash provided by (used in) financing activities	(4,684)	102,366	(7,648)
Net increase (decrease) in cash and cash equivalents	(12,223)	37,773	2,033
Cash and cash equivalents, beginning of year	49,207	11,434	9,401
Cash and cash equivalents, end of period	36,984	49,207	11,434
Supplemental disclosures of cash flow information
Income taxes paid	1,857	2,353	2,673
Non-Cash Investing and Financing Activities
Stock issued for acquisition of Lixoft	666	3,261	0
Creation of contract liabilities for acquisition of subsidiaries	0	4,528	0
Right of use assets capitalized	$ 905	$ 1,499	$ 0