Earnings Per Share (Details 1) (USD $)	3 Months Ended
Mar. 31, 2015	Mar. 31, 2014
Numerator
Net income (loss)	$ 5,262,379us-gaap_NetIncomeLoss	$ (2,801,798)us-gaap_NetIncomeLoss
Effects of Series A redeemable convertible preferred stock:
Less: Series A redeemable convertible preferred stock dividends	190,786	186,904
Less: Accretion to redemption value of Series A redeemable convertible preferred stock	137,417	115,376
Net income (loss) attributable to common stockholders	$ 4,934,176	$ (3,104,078)
Denominator
Weighted average basic shares outstanding (in shares)	40,935,380	48,031,737
Effect of dilutive securities:
Stock options and restricted stock	1,547,351	0
Series A redeemable convertible preferred stock	8,781,516	0
Weighted average diluted shares outstanding (in shares)	51,264,247	48,031,737
Basic net income (loss) per share attributable to common stockholders (in dollars per share)	$ 0.12us-gaap_EarningsPerShareBasic	$ (0.06)us-gaap_EarningsPerShareBasic
Diluted net income (loss) per share attributable to common stockholders (in dollars per share)	$ 0.10us-gaap_EarningsPerShareDiluted	$ (0.06)us-gaap_EarningsPerShareDiluted

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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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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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Additional shares included in the calculation of diluted EPS as a result of the potentially dilutive effect of convertible preferred stock using the if-converted method.

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Additional shares included in the calculation of diluted EPS as a result of the potentially dilutive effect of share based payment arrangements using the treasury stock method.

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

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Net income after adjustments for dividends on preferred stock (declared in the period) and/or cumulative preferred stock (accumulated for the period).

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Amount of decrease to net income for accretion of temporary equity to its redemption value to derive net income apportioned to common stockholders.

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Accretion of temporary equity during the period due to cash, stock, and in-kind dividends. This item is an adjustment to net income necessary to derive net income apportioned to common stockholders and is to be distinguished from Temporary Equity, Accretion of Dividends (Temporary Equity, Accretion of Dividends).

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The average number of shares or units issued and outstanding that are used in calculating diluted EPS or earnings per unit (EPU), determined based on the timing of issuance of shares or units in the period.

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