Consolidated Balance Sheets (Parenthetical) (USD $) In Thousands, except Share data, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Preferred stock (par value)	$ 0.001	$ 0.001
Preferred stock - shares authorized	5,000,000us-gaap_PreferredStockSharesAuthorized	5,000,000us-gaap_PreferredStockSharesAuthorized
Preferred stock - shares issued	0us-gaap_PreferredStockSharesIssued	0us-gaap_PreferredStockSharesIssued
Preferred stock - shares outstanding	0us-gaap_PreferredStockSharesOutstanding	0us-gaap_PreferredStockSharesOutstanding
Common stock (par value)	$ 0.001	$ 0.001
Common stock - shares authorized	300,000,000us-gaap_CommonStockSharesAuthorized	300,000,000us-gaap_CommonStockSharesAuthorized
Common stock - shares issued	934,102us-gaap_CommonStockSharesIssued	237,026us-gaap_CommonStockSharesIssued
Common stock - shares outstanding	920,843us-gaap_CommonStockSharesOutstanding	237,026us-gaap_CommonStockSharesOutstanding
Series A Convertible Preferred Stock
Convertible preferred stock (par value)	$ 0.0001	$ 0.0001
Convertible preferred stock - shares authorized	0	55,653,728
Convertible preferred stock - shares issued	0	27,248,746
Convertible preferred stock - shares outstanding	0	27,248,746
Convertible preferred stock aggregate liquidation preference	$ 0	$ 27,249

Face amount or stated value per share of common stock.

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