Warrant Exercises (Detail) (USD $)	3 Months Ended	6 Months Ended
Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
Fair Value Measurements [Line Items]
Exercise date:		--02-07
Market price of common stock:		$ 6.44
Exercise warrants:		125,000
Exercise price:		$ 3.50
Remaining contractual life (years):		1 year 8 months 23 days
Dividend yield:
Expected volatility:		39.43%
Risk-free interest rate:		0.21%
Fair values:		$ 3.08
Gain on extinguishment of warrant liabilities	$ 26,531	$ 73,291	$ 87,255

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Financial Instrument Fair Value Assumptions Fair Values Of Warrants Exercise

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Number of Warrants Exercised

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Agreed upon price for the exchange of the underlying asset.

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Expected dividends to be paid to holders of the underlying shares or financial instruments (expressed as a percentage of the share or instrument's price).

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Period the instrument, asset or liability is expected to be outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Risk-free interest rate assumption used in valuing an instrument.

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Difference between the fair value of payments made and the carrying amount of debt which is extinguished prior to maturity.

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Price of a single share of a number of saleable stocks of a company.

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