Earnings per Share - Additional Information (Details) - $ / shares	3 Months Ended
Mar. 31, 2016	Mar. 31, 2015	Dec. 31, 2015
Earnings Per Share [Line Items]
Series A Preferred stock, par value (in usd per share)	$ 0.001		$ 0.001
Assumed average market price per share exercise of warrants treasury method (in usd per share)	25.21	$ 41.90
Series A Convertible Preferred Stock
Earnings Per Share [Line Items]
Series A Preferred stock, par value (in usd per share)	$ 0.001

Face amount or stated value per share of preferred stock nonredeemable or redeemable solely at the option of the issuer.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.28)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 02
-Paragraph 29
-Article 5

Name:	us-gaap_PreferredStockParOrStatedValuePerShare
Namespace Prefix:	us-gaap_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	instant