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Significant Accounting Policies - Computation of Basic and Diluted Income (Loss) Per Common Share (Detail) (USD $)	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Earnings Per Share [Abstract]
Net income (loss)	$ 7,991,721	$ (3,497,060)	$ 2,889,870	$ (3,037,371)
Income (loss) per share-basic	$ 0.42	$ (3.70)	$ 0.16	$ (3.24)
Income (loss) per share-diluted	$ 0.39	$ (3.70)	$ 0.15	$ (3.24)
Basic weighted average common shares outstanding	18,807,675	946,363	18,020,121	938,446
Diluted weighted average common shares outstanding	20,238,343	946,363	19,472,995	938,446

The amount of net income (loss) for the period per each share of common stock or unit outstanding during the reporting period.

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- Definition

The amount of net income (loss) for the period available to each share of common stock or common unit outstanding during the reporting period and to each share or unit that would have been outstanding assuming the issuance of common shares or units for all dilutive potential common shares or units outstanding during the reporting period.

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- Definition

The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

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