Common Stock (Repurchases) (Details)	12 Months Ended	39 Months Ended	63 Months Ended
Dec. 31, 2014 request $ / shares shares	Dec. 31, 2013 request $ / shares shares	Dec. 31, 2012 request $ / shares shares	Dec. 31, 2014 request $ / shares shares
Equity [Abstract]
Number of Requests \| request	1	24	11	36
Common stock repurchases (in shares) \| shares	5,000	195,395	84,199	284,594
Average price per share (in usd per share) \| $ / shares	$ 10.00	$ 9.65	$ 9.56	$ 9.63

Number of shares that have been repurchased during the period and have not been retired and are not held in treasury. Some state laws may govern the circumstances under which an entity may acquire its own stock and prescribe the accounting treatment therefore. This element is used when state law does not recognize treasury stock.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21463-112644

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 04
-Article 3

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 02
-Paragraph 29, 30
-Article 5

Name:	us-gaap_StockRepurchasedDuringPeriodShares
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration