Related Party Transactions - Additional Information (Detail) - USD ($)	1 Months Ended	7 Months Ended	12 Months Ended
	Jul. 31, 2013	Nov. 07, 2013	Mar. 31, 2014	Mar. 31, 2015	Jun. 11, 2014	Apr. 01, 2013	Aug. 31, 2012	Mar. 02, 2010
Related Party Transaction [Line Items]
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%
Restricted cash				$ 500,000
Estimated additional taxes, penalties and interest				$ 4,800,000
Lafe Strategic Services Limited
Related Party Transaction [Line Items]
Security deposit returned	$ (6,000)
Amount receivable from related party						$ 0
Mr. Eduard Will, a director of Emerson
Related Party Transaction [Line Items]
Amount owed to related party		$ 0
Consulting fees paid to related party		68,000
Travel advance paid to related party		6,000
Grande
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%
Amount owed from Emerson to Brighton Marketing Limited
Related Party Transaction [Line Items]
Service charge from related party			$ 1,000
Amount owed to related party			0
Grande Properties Management Limited
Related Party Transaction [Line Items]
Service charge from related party		11,000
Amount owed to related party			$ 0
Vigers Appraisal & Consulting Ltd
Related Party Transaction [Line Items]
Amount receivable from related party		0
Amount invoiced to related party		$ 3,000