Consolidated Statement of Cash Flows (USD $)	6 Months Ended
Jan. 31, 2012	Jan. 29, 2011
Cash flows from operating activities:
Net income	$ 2,708,342	$ 4,598,766
Adjustments to reconcile net income to net cash provided by (used in) operating activities:
Depreciation and amortization	876,039	860,098
Provision for deferred income taxes	(43,030)	(188,116)
Share-based compensation expense	379,860	270,588
Tax impact of share-based compensation	105,988	0
Gain on sale of assets	0	(58,332)
Provision for contract adjustments	81,090	584,811
(Increase) decrease in:
- contract receivables	5,375,266	(6,998,669)
- other current assets	(557,303)	(564,734)
- income tax receivable	(1,400,388)	0
- other non-current assets	(13,341)	(141,418)
Increase (decrease) in:
- accounts payable	(2,851,075)	(1,884,592)
- accrued payroll costs	(836,922)	730,841
- income taxes payable	(1,374,239)	95,106
- billings in excess of revenue	1,481,525	6,296,177
- other accrued liabilities	(946,090)	266,527
Net cash provided by operating activities	2,985,722	3,867,053
Cash flows provided by (used in) investing activities:
Acquistion of noncontrolling interest of subsidiaries	(817,549)	(179,521)
Purchase of Engineering Consulting Services, Inc., net of cash equivalents of $309,487	0	(790,513)
Purchase of property, building and equipment	(2,585,926)	(797,554)
Change in accounts payable due to purchase of equipment	10,392	0
Purchase of investment securities	119,888	(29,966)
Cash used in investing activities	(3,273,195)	(1,797,554)
Cash flows provided by (used in) financing activities:
Dividends paid	(2,046,657)	(1,814,839)
Proceeds from debt	298,648	431,886
Repayment of debt and capital lease obligations	(637,955)	(722,407)
Proceeds from lines of credit	6,500,000	0
Distributions to noncontrolling interests	(345,093)	(406,031)
Proceeds from sale of subsidiary shares to noncontrolling interests	41,634	62,451
Purchase of treasury stock	(363,050)	(254,036)
Net cash used in financing activities	3,447,527	(2,702,976)
Effect of exchange rate changes on cash and cash equivalents	82,516	261,465
Net increase (decrease) in cash and cash equivalents	3,242,570	(372,012)
Cash and cash equivalents at beginning of period	8,529,842	14,229,894
Cash and cash equivalents at end of period	$ 11,772,412	$ 13,857,882

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Includes currency on hand as well as demand deposits with banks or financial institutions. It also includes other kinds of accounts that have the general characteristics of demand deposits in that the Entity may deposit additional funds at any time and also effectively may withdraw funds at any time without prior notice or penalty. Cash equivalents, excluding items classified as marketable securities, include short-term, highly liquid investments that are both readily convertible to known amounts of cash, and so near their maturity that they present minimal risk of changes in value because of changes in interest rates. Generally, only investments with original maturities of three months or less qualify under that definition. Original maturity means original maturity to the entity holding the investment. For example, both a three-month US Treasury bill and a three-year Treasury note purchased three months from maturity qualify as cash equivalents. However, a Treasury note purchased three years ago does not become a cash equivalent when its remaining maturity is three months. Compensating balance arrangements that do not legally restrict the withdrawal or usage of cash amounts may be reported as Cash and Cash Equivalents, while legally restricted deposits held as compensating balances against borrowing arrangements, contracts entered into with others, or company statements of intention with regard to particular deposits are not generally reported as cash and cash equivalents. Includes cash and cash equivalents associated with the entity's continuing operations. Excludes cash and cash equivalents associated with the disposal group (and discontinued operation).