Commitments and Contingencies - Additional Information (Detail) (USD $)	12 Months Ended	1 Months Ended
Mar. 31, 2013	Mar. 31, 2012	Mar. 31, 2013 Longview, Texas office building	Mar. 31, 2013 Humble, Texas office building	May 27, 2013 Lease Renewal Options Longview, Texas office building
Contingencies And Commitments [Line Items]
Operating lease expiration, date			Apr. 30, 2013	Dec. 31, 2016	Apr. 30, 2018
Rental expenses for leased properties	$ 67,900	$ 44,500			$ 32,736
Operating lease beginning date					May 01, 2013

Rental expense incurred for leased assets including furniture and equipment which has not been recognized in costs and expenses applicable to sales and revenues; for example, cost of goods sold or other operating costs and expenses.

No definition available.

Name:	us-gaap_LeaseAndRentalExpense
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration