Litigation (Narrative) (Details) (USD $)	0 Months Ended	3 Months Ended	12 Months Ended		1 Months Ended	12 Months Ended	3 Months Ended
	Apr. 08, 2013	Mar. 31, 2014	Dec. 31, 2013	Feb. 18, 2014	Nov. 30, 2010 Purported Stockholder Derivative and Securities Class Action Lawsuits [Member]	Dec. 31, 2013 Purported Stockholder Derivative and Securities Class Action Lawsuits [Member]	Aug. 31, 2008 U. S. District Court in the Central District of California [Member] Purported Stockholder Derivative and Securities Class Action Lawsuits [Member] claims	Aug. 31, 2008 Superior Court of the State of California [Member] Purported Stockholder Derivative and Securities Class Action Lawsuits [Member] claims
Loss Contingencies [Line Items]
Purported stockholder derivative and securities class action lawsuits							5	1
Litigation settlement, amount					$ 10,000,000.0
Stipulation of settlement, insurance carriers payment	2,500,000.0
Stipulation of settlement, payment to plaintiff	500,000
Stipulation of settlement, payment to plaintiff, warrants	250,000			250,000
Stipulation of settlement, payment to plaintiff, warrants, term	5 years	5 years
Insurance proceeds related to litigation settlement						1,000,000
Litigation settlement, expense			$ 1,900,000