Period which an employee's right to exercise an award is no longer contingent on satisfaction of either a service condition, market condition or a performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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The difference between the maximum number of shares (or other type of equity) authorized for issuance under the plan (including the effects of amendments and adjustments), and the sum of: 1) the number of shares (or other type of equity) already issued upon exercise of options or other equity-based awards under the plan; and 2) shares (or other type of equity) reserved for issuance on granting of outstanding awards, net of cancellations and forfeitures, if applicable.

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Net number of share options (or share units) granted during the period.

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Weighted average price at which option holders acquired shares when converting their stock options into shares.

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Weighted average per share amount at which grantees can acquire shares of common stock by exercise of options.

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Amount of capitalized and expensed compensation cost from equity-based compensation arrangements.

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Period from grant date that an equity-based award expires, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Number of share options (or share units) exercised during the current period.

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Equity Incentive Plans - Additional Information (Details) - USD ($)	1 Months Ended			3 Months Ended		9 Months Ended		12 Months Ended
	Nov. 30, 2014	Dec. 31, 2010	Dec. 31, 2006	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014	Dec. 31, 2014
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Share-based compensation				$ 1,853,491	$ 242,926	$ 5,573,451	$ 728,778
Restricted Stock Units
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Vesting period				1 year
Restricted stock units granted				0
2006 Stock Plan
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Stock options, number of shares granted			624,223
Vesting period			5 years
Stock options, available for grant				0		0
Stock options exercised, shares				6,221		37,119
Weighted average exercise price of options exercised				$ 6.27		$ 6.46
2010 Stock Plan
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Stock options, number of shares granted		2,146,320
Vesting period		4 years
Stock options, available for grant		2,220,280
Stock options exercised, shares				1,449		7,313
Weighted average exercise price of options exercised				$ 7.10		$ 7.10
2010 Stock Plan \| Performance Based Options
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Vesting period	2 years
2014 Omnibus Incentive Plan
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Stock options, number of shares granted	1,479,200			0		6,550
Vesting period						3 years
Stock options, available for grant				936,648		936,648
Stock options exercised, shares				0		0
Weighted average exercise price of shares granted						$ 17.00
Maximum \| 2006 Stock Plan
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Options granted maximum contractual terms						10 years
Maximum \| 2010 Stock Plan
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Options granted maximum contractual terms								10 years