Net Income (Loss) Per Share (Details) (USD $)	3 Months Ended
Mar. 31, 2015	Mar. 31, 2014
Net Income (Loss) Per Share [Abstract]
Net income (loss) used for calculation of basic and diluted EPS	$ 45,129,000us-gaap_NetIncomeLoss	$ (3,108,000)us-gaap_NetIncomeLoss
Weighted average shares outstanding, basic	29,415,768	26,262,356
Net income (loss) per share, basic	$ 1.53	$ (0.12)
Basic weighted average common shares outstanding (in shares)	29,415,768	26,262,356
Stock options and restricted stock units	2,268,406	0
Weighted average shares outstanding, diluted	31,684,174	26,262,356
Diluted income (loss) per common share (in dollars per share)	$ 1.42us-gaap_EarningsPerShareDiluted	$ (0.12)us-gaap_EarningsPerShareDiluted
Stock Options (in shares)		2,719,339

Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented.

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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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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 or Loss Available to Common Stockholders plus adjustments resulting from the assumption that dilutive convertible securities were converted, options or warrants were exercised, or that other shares were issued upon the satisfaction of certain conditions.

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The sum of dilutive potential common shares or units used in the calculation of the diluted per-share or per-unit computation.

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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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Number of [basic] shares or units, after adjustment for contingently issuable shares or units and other shares or units not deemed outstanding, determined by relating the portion of time within a reporting period that common shares or units have been outstanding to the total time in that period.

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