Investment Securities (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended	12 Months Ended
	Mar. 31, 2014	Dec. 31, 2013
Schedule of Available-for-sale Securities [Line Items]
Cost	$ 1,288	$ 1,288
Gross Unrealized Gains	0	0
Gross Unrealized Losses	(116)	(240)
Fair Value	$ 1,172	$ 1,048
Converted Preferred Shares
Schedule of Available-for-sale Securities [Line Items]
Period from issuance when investments become redeemable	5 years