Stockholders' Equity Rights plan (Details) (USD $)			12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2013 Rights [Member]	Dec. 31, 2013 Rights [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Preferred Stock, Shares Authorized	15,000,000	15,000,000
Investment Options, Exercise Price			$ 100.00
Class of Warrant or Right, Exercise Price of Warrants or Rights				0.01