Borrowings (Interest Rate Swap on Senior Secured Notes) (Details) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2014		Dec. 31, 2013
Debt Instrument [Line Items]
Fair market value of Rate Agreement - asset (liability)	$ (1,066)		$ (1,660)
Adjustment to increase (decrease) the carrying value of the related long-term debt	(965)	[1]	(1,324)	[1]
Derivative asset [Member] | Interest rate agreements [Member] | Designated as Hedging Instrument [Member]
Debt Instrument [Line Items]
Fair market value of Rate Agreement - asset (liability)	$ (1,644)		$ (2,073)

[1] See Interest Rate Agreement under “Senior Secured Notes” below and in note 9.