Shareholders' Equity (Details) (USD $)	1 Months Ended		3 Months Ended		6 Months Ended			12 Months Ended		1 Months Ended		3 Months Ended
	Aug. 31, 2014	Aug. 31, 2013	Jan. 31, 2015	Jan. 31, 2014	Jan. 31, 2015		Jan. 31, 2014	Jul. 31, 2014		Jan. 31, 2015 Installments	Jan. 31, 2014	Oct. 31, 2013 Installments	Aug. 31, 2010
Cash Dividends [Abstract]
Cash dividends declared			$ 1,033,071	$ 1,033,551	$ 1,033,071		$ 1,033,551
Accrued dividends payable			1,033,071	1,033,551	1,033,071		1,033,551			1,033,071	1,033,551
Dividends paid	1,000,000	1,000,000
Schedule of Equity Method Investments [Line Items]
Total purchases of additional non controlling interests					283,221	[1]		1,156,652	[1]
Purchase of noncontrolling interest					50,000		689,361
Noncontrolling Interest [Member]
Cash Dividends [Abstract]
Cash dividends declared					0			0
Schedule of Equity Method Investments [Line Items]
Total purchases of additional non controlling interests					199,531	[1]		1,156,652	[1]
Noncontrolling Interest [Member] | Gustavson [Member]
Schedule of Equity Method Investments [Line Items]
Interest purchased (in hundredths)										7.20%
Purchase of noncontrolling interest										300,000
Purchase of noncontrolling interest, 1st installment										100,000
Purchase of noncontrolling interest, 2nd and 3rd installment										200,000
Increase in indirect ownership (in hundredths)			83.60%		83.60%					83.60%
Number of annual installments										3
Interest on promissory notes (in hundredths)			6.00%		6.00%					6.00%
Noncontrolling Interest [Member] | 2800 Gustavson [Member]
Schedule of Equity Method Investments [Line Items]
Total purchases of additional non controlling interests					283,221	[2]		0	[2]
Noncontrolling interests shares purchased (in shares)					2,800
Noncontrolling Interest [Member] | 344 Walsh [Member]
Schedule of Equity Method Investments [Line Items]
Total purchases of additional non controlling interests					0	[3]		5,653	[3]
Noncontrolling interests shares purchased (in shares)					344
Interest purchased (in hundredths)											0.90%
Purchase of noncontrolling interest											100,000
Noncontrolling Interest [Member] | 3,705 Walsh [Member]
Schedule of Equity Method Investments [Line Items]
Total purchases of additional non controlling interests					0	[4]		1,120,749	[4]
Noncontrolling interests shares purchased (in shares)					3,705
Interest purchased (in hundredths)												9.40%
Purchase of noncontrolling interest												1,600,000
Percentage of acquisition paid in cash (in hundredths)												33.33%
Percentage of acquisition paid with stock (in hundredths)												33.33%
Percentage of acquisition paid with promissory note (in hundredths)												33.33%
Number of annual installments												2
Portion of principal of acquisition paid on promissory note (in hundredths)												50.00%
Interest on promissory notes (in hundredths)												3.25%
Noncontrolling Interest [Member] | 100 Walsh [Member]
Schedule of Equity Method Investments [Line Items]
Total purchases of additional non controlling interests					0	[5]		30,250	[5]
Noncontrolling interests shares purchased (in shares)					100
Interest purchased (in hundredths)												0.20%
Purchase of noncontrolling interest												100,000
Noncontrolling Interest [Member] | Walsh 03 [Member]
Schedule of Equity Method Investments [Line Items]
Noncontrolling interests shares purchased (in shares)					50
Noncontrolling Interest [Member] | Walsh 04 [Member]
Schedule of Equity Method Investments [Line Items]
Noncontrolling interests shares purchased (in shares)					25
Noncontrolling Interest [Member] | Walsh 05 [Member]
Schedule of Equity Method Investments [Line Items]
Noncontrolling interests shares purchased (in shares)					495
Noncontrolling Interest [Member] | Walsh 06 [Member]
Schedule of Equity Method Investments [Line Items]
Noncontrolling interests shares purchased (in shares)					370
Noncontrolling Interest [Member] | Gustavson 05 [Member]
Schedule of Equity Method Investments [Line Items]
Noncontrolling interests shares purchased (in shares)					2,800
Noncontrolling Interest [Member] | Lowham 07 [Member]
Schedule of Equity Method Investments [Line Items]
Noncontrolling interests shares purchased (in shares)					75
Class A [Member]
Class A and Class B common stock [Abstract]
Percentage equity holders entitled to elect Board of Directors (in hundredths)					25.00%
Minimum percentage of the number of outstanding Class A shares to combined classes of shares (in hundredths)					10.00%
Voting power of Class A common share holders to the Class B common share holders (in hundredths)					10.00%
Stock Repurchase [Abstract]
Number of shares authorized to be repurchased (in shares)			122,918		122,918					122,918			200,000
Number of Class A share acquired (in shares)			0	16,091	0		16,091			0	16,091
Acquisition cost			$ 0	$ 200,000	$ 0		$ 200,000			$ 0	$ 200,000
Remaining number of shares authorized to be repurchased (in shares)			77,082		77,082					77,082

[1] Purchases of additional noncontrolling interests are recorded as reductions of shareholders' equity on the condensed consolidated statements of shareholders' equity.

[2] In January 2015, Gustavson Associates, LLC ("Gustavson"), a majority owned indirect subsidiary of EEI, purchased an additional 7.2% of its outstanding common shares from noncontrolling shareholders for $0.3 million. The purchase price was paid as follows: (i) approximately $0.1 million of cash paid on the transaction date; and (ii) approximately $0.2 million payable in 3 annual installments plus interest accrued at 6% per annum. EEI's indirect ownership of Gustavson increased to 83.6% as a result of this transaction.

[3] In January 2014, EEI purchased an additional 0.9% of Walsh from noncontrolling shareholders for $0.1 million in cash. Walsh became a wholly-owned subsidiary of EEI as a result of these transactions.

[4] In October 2013, EEI purchased an additional 9.4% of Walsh for $1.6 million. The purchase price was paid as follows: (i) one third in cash payable on the transaction consummation date; (ii) one third payable with EEI Common Stock on the transaction consummation date; and (iii) one third payable in two annual installments plus interest accrued at 3.25% per annum.

[5] In October 2013, EEI purchased an additional 0.2% of Walsh for less than $0.1 million in cash.