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Stockholders' Equity - Initial Public Offering (Details) - USD ($) $ / shares in Units, $ in Millions				6 Months Ended	21 Months Ended
	Apr. 22, 2014	Apr. 09, 2014	Dec. 31, 2013	Jun. 30, 2014	Jun. 30, 2014
Common Stock
Class of Stock [Line Items]
Offering price (in dollars per share)	$ 7.00
IPO
Class of Stock [Line Items]
Proceeds from IPO	$ 74.9
Underwriters discounts and commissions	$ 5.6
Offering expenses					$ 4.2
Payment of offering costs			$ 0.8	$ 3.4
IPO | Common Stock
Class of Stock [Line Items]
Number of shares issued		10,000,000
Offering price (in dollars per share)		$ 7.00
Shares issued to underwriters (in shares)	1,500,000

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 14
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=56944662&loc=d3e3255-108585

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Financing Activities
-URI http://asc.fasb.org/extlink&oid=6513228

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