Related Party Transactions - Additional Information (Detail) (USD $)	1 Months Ended						3 Months Ended	6 Months Ended		3 Months Ended		6 Months Ended		1 Months Ended	3 Months Ended	6 Months Ended	3 Months Ended		6 Months Ended		3 Months Ended		6 Months Ended
	Feb. 28, 2011	Jan. 31, 2011	Jun. 30, 2010	Aug. 31, 2012	Mar. 02, 2010	Apr. 29, 2013 Grande [Member]	Sep. 30, 2012 Amount owed from Emerson to Brighton Marketing Limited	Sep. 30, 2013 Amount owed from Emerson to Brighton Marketing Limited	Sep. 30, 2012 Amount owed from Emerson to Brighton Marketing Limited	Sep. 30, 2013 Grande Properties Management Limited	Sep. 30, 2012 Grande Properties Management Limited	Sep. 30, 2013 Grande Properties Management Limited	Sep. 30, 2012 Grande Properties Management Limited	Jul. 03, 2013 Lafe Strategic Services Limited	Sep. 30, 2012 Lafe Strategic Services Limited	Sep. 30, 2013 Lafe Strategic Services Limited	Sep. 30, 2013 Mr. Eduard Will, a director of Emerson	Sep. 30, 2012 Mr. Eduard Will, a director of Emerson	Sep. 30, 2013 Mr. Eduard Will, a director of Emerson	Sep. 30, 2012 Mr. Eduard Will, a director of Emerson	Sep. 30, 2013 Vigers Appraisal & Consulting Ltd	Sep. 30, 2012 Vigers Appraisal & Consulting Ltd	Sep. 30, 2013 Vigers Appraisal & Consulting Ltd	Sep. 30, 2012 Vigers Appraisal & Consulting Ltd
Related Party Transaction [Line Items]
Grande's (Provisional Liquidator Appointed) Ownership Interest in Emerson number of shares						15,243,283
Grande's (Provisional Liquidator Appointed) Ownership Interest Percentage						56.20%
Service charge from related party							$ 2,000	$ 1,000	$ 2,000	$ 4,000	$ 10,000	$ 8,000	$ 21,000
Amount owed to related party
Rental income															9,000
Security deposit returned														6,000
Amount receivable from related party																						1,000		1,000
Security deposit paid at inception of agreement															6,000
Notice period to cancel rental agreement																1 month
Consulting fees paid to related party																	29,000	23,000	58,000	52,000
Expense reimbursements and advances paid to related party																		8,000		10,000
Extraordinary dividend declared					$ 1.10
Company's assertion as to the percent of the dividend that is taxable to the recipient					4.90%
Internal Revenue Service's assertion as to the percent of the dividend that is taxable to the recipient, which the company is refuting				100.00%
Reimbursement of legal fees			42,000
Agreement transaction fees			33,000
Waive of legal charges		5,000
Receipts from related party for amount owned	70,000
Amount invoiced to related party																					$ 1,000	$ 1,000	$ 2,000	$ 2,000