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Preferred Redeemable Convertible Stock - Schedule of Preferred Redeemable Convertible Stock (Details)	12 Months Ended
	Dec. 31, 2016 USD ($) shares
Class Of Stock [Line Items]
Effect of accretion to redemption value	$ 1,356,707
Conversion of warrants	$ 249,215
Preferred Redeemable Convertible Stock
Class Of Stock [Line Items]
Beginning balance, Shares | shares	23,271,702
Conversion of warrants, shares | shares	(23,271,702)
Beginning balance, Amount	$ 43,106,906
Effect of accretion to redemption value	1,356,707
Conversion of warrants	$ (44,463,613)

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The amount of accretion of the preferred stock redemption discount during the period.

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Aggregate share number for all nonredeemable preferred stock (or preferred stock redeemable solely at the option of the issuer) held by stockholders. Does not include preferred shares that have been repurchased.

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Value of all nonredeemable preferred stock (or preferred stock redeemable solely at the option of the issuer) held by shareholders, which is net of related treasury stock. May be all or a portion of the number of preferred shares authorized. These shares represent the ownership interest of the preferred shareholders.

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Number of shares issued during the period as a result of the conversion of convertible securities.

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