Earnings (Loss) Per Share Reconciliation of Net Loss per Share (Details) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended
Mar. 31, 2014	Mar. 31, 2013
Earnings Per Share [Abstract]
Net loss attributable to common stockholders	$ (7,669)	$ (4,019)
Weighted-average number of shares of common stock outstanding:
Basic and diluted (in shares)	32,130,733	18,414,830
Net loss per share of common stock (dollars per share)	$ (0.24)	$ (0.22)

The amount of net income or loss for the period per each share in instances when basic and diluted earnings per share are the same amount and reported as a single line item on the face of the financial statements. Basic earnings per share is the amount of net income or loss for the period per each share of common stock or unit outstanding during the reporting period. Diluted earnings per share includes the amount of net income or 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.

No definition available.

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Data Type:	num:perShareItemType
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Period Type:	duration