Income Taxes - Net Operating Loss Carryforwards (Details) - Tax Years Beginning - Federal - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2014	Dec. 31, 2013
Operating loss carryforwards
Net operating loss carryforwards	$ 5.3	$ 5.6
Carryforward expiration	Jan. 01, 2032

Amount of operating loss carryforward, before tax effects, available to reduce future taxable income under enacted tax laws.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 740

-SubTopic 10

-Section 50

-Paragraph 3

-Subparagraph (a)

-URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32559-109319

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Expiration date of each operating loss carryforward included in operating loss carryforward, in CCYY-MM-DD format.

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