Reverse Stock Split and Public Offering (Details) - USD ($) $ / shares in Units, $ in Millions		1 Months Ended
	Aug. 05, 2015	Aug. 31, 2015	Sep. 30, 2015	Aug. 10, 2015	Jul. 01, 2015	Dec. 31, 2014
Class of Stock [Line Items]
Common Stock, Shares Authorized			50,000,000		50,000,000	50,000,000
Price per share (in usd per share)	$ 18.00			$ 18.00
Public Offering
Class of Stock [Line Items]
Number of shares issued in public offering	5,462,500	5,462,500
Proceeds from issuance of IPO	$ 92	$ 92
Over-Allotment Option
Class of Stock [Line Items]
Number of shares issued in public offering	712,500	712,500