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Restatement of Unaudited Condensed Consolidated Financial Statements, Condensed Consolidated Statement of Cash Flows (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jan. 26, 2019	Jan. 27, 2018	Jan. 26, 2019	Jan. 27, 2018
Cash flows from operating activities [Abstract]
Net income (loss)	$ (310)	$ (528)	$ (425)	$ 160
Adjustments to reconcile net income to net cash provided by operating activities [Abstract]
Depreciation and amortization	264	259	541	519
Provision for deferred income taxes			(6)	(92)
Share based compensation expense			127	70
(Gain) loss on sale of assets and investment securities			(2)	(1)
Net recovery of contract adjustments				(35)
Net bad debt (recovery) expense			(187)	(98)
Changes in [Abstract]
- contract receivables			(247)	6,823
- other current assets			(916)	(150)
- income tax receivable			(381)	668
- equity method investment			(231)	(239)
- other non-current assets			277	36
- accounts payable			1,322	(1,485)
- accrued payroll costs			(1,162)	(740)
- income taxes payable			0	302
- customer deposits			(345)	558
- other accrued liabilities			43	(216)
Net cash (used in) provided by operating activities			(1,455)	6,080
Cash flows from investing activities [Abstract]
Purchase of property, building and equipment			(259)	(415)
Proceeds from sale of building and equipment			2	1
Purchase of investment securities			(16)	7
Net cash used in investing activities			(273)	(407)
Cash flows from financing activities [Abstract]
Dividends paid			(863)	(860)
Repayment of debt			(29)	(358)
Net borrowings (repayment) of lines of credit			210	66
Distributions to noncontrolling interests			(116)	(192)
Net cash used in financing activities			(798)	(1,344)
Effect of exchange rate changes on cash and cash equivalents			49	5
Net increase (decrease) in cash, cash equivalents and restricted cash			(2,477)	4,334
Cash, cash equivalents and restricted cash at beginning of period			13,746	13,135
Cash, cash equivalents and restricted cash at end of period	$ 11,269	17,469	$ 11,269	17,469
As Previously Reported [Member]
Cash flows from operating activities [Abstract]
Net income (loss)		(597)		51
Adjustments to reconcile net income to net cash provided by operating activities [Abstract]
Depreciation and amortization		268		537
Provision for deferred income taxes				436
Share based compensation expense				0
(Gain) loss on sale of assets and investment securities				(1)
Net recovery of contract adjustments				(35)
Net bad debt (recovery) expense				(130)
Changes in [Abstract]
- contract receivables				7,248
- other current assets				(300)
- income tax receivable				543
- equity method investment				0
- other non-current assets				60
- accounts payable				(1,996)
- accrued payroll costs				(640)
- income taxes payable				294
- customer deposits				506
- other accrued liabilities				(250)
Net cash (used in) provided by operating activities				6,323
Cash flows from investing activities [Abstract]
Purchase of property, building and equipment				(425)
Proceeds from sale of building and equipment				1
Purchase of investment securities				7
Net cash used in investing activities				(417)
Cash flows from financing activities [Abstract]
Dividends paid				(860)
Repayment of debt				(358)
Net borrowings (repayment) of lines of credit				(152)
Distributions to noncontrolling interests				(192)
Net cash used in financing activities				(1,562)
Effect of exchange rate changes on cash and cash equivalents				20
Net increase (decrease) in cash, cash equivalents and restricted cash				4,364
Cash, cash equivalents and restricted cash at beginning of period				13,343
Cash, cash equivalents and restricted cash at end of period		17,707		17,707
Impact of GAC Deconsolidation [Member]
Cash flows from operating activities [Abstract]
Net income (loss)		(179)		(194)
Adjustments to reconcile net income to net cash provided by operating activities [Abstract]
Depreciation and amortization		(9)		(18)
Provision for deferred income taxes				(266)
Share based compensation expense				0
(Gain) loss on sale of assets and investment securities				0
Net recovery of contract adjustments				0
Net bad debt (recovery) expense				32
Changes in [Abstract]
- contract receivables				261
- other current assets				5
- income tax receivable				142
- equity method investment				(239)
- other non-current assets				(13)
- accounts payable				69
- accrued payroll costs				(100)
- income taxes payable				8
- customer deposits				52
- other accrued liabilities				34
Net cash (used in) provided by operating activities				(227)
Cash flows from investing activities [Abstract]
Purchase of property, building and equipment				10
Proceeds from sale of building and equipment				0
Purchase of investment securities				0
Net cash used in investing activities				10
Cash flows from financing activities [Abstract]
Dividends paid				0
Repayment of debt				0
Net borrowings (repayment) of lines of credit				218
Distributions to noncontrolling interests				0
Net cash used in financing activities				218
Effect of exchange rate changes on cash and cash equivalents				(24)
Net increase (decrease) in cash, cash equivalents and restricted cash				(23)
Cash, cash equivalents and restricted cash at beginning of period				(208)
Cash, cash equivalents and restricted cash at end of period		(231)		(231)
Out of Period Adjustments [Member]
Cash flows from operating activities [Abstract]
Net income (loss)		248		303
Adjustments to reconcile net income to net cash provided by operating activities [Abstract]
Depreciation and amortization		0		0
Provision for deferred income taxes				(262)
Share based compensation expense				70
(Gain) loss on sale of assets and investment securities				0
Net recovery of contract adjustments				0
Net bad debt (recovery) expense				0
Changes in [Abstract]
- contract receivables				(686)
- other current assets				145
- income tax receivable				(17)
- equity method investment				0
- other non-current assets				(11)
- accounts payable				442
- accrued payroll costs				0
- income taxes payable				0
- customer deposits				0
- other accrued liabilities				0
Net cash (used in) provided by operating activities				(16)
Cash flows from investing activities [Abstract]
Purchase of property, building and equipment				0
Proceeds from sale of building and equipment				0
Purchase of investment securities				0
Net cash used in investing activities				0
Cash flows from financing activities [Abstract]
Dividends paid				0
Repayment of debt				0
Net borrowings (repayment) of lines of credit				0
Distributions to noncontrolling interests				0
Net cash used in financing activities				0
Effect of exchange rate changes on cash and cash equivalents				9
Net increase (decrease) in cash, cash equivalents and restricted cash				(7)
Cash, cash equivalents and restricted cash at beginning of period				0
Cash, cash equivalents and restricted cash at end of period		$ (7)		$ (7)