Fair Value Schedule of Fair Value Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation (Details) (Significant Unobservable Inputs (Level 3), USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013
Significant Unobservable Inputs (Level 3)
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance at December 31, 2012	$ 241
Expenses recorded due to changes in fair value	9
Payments	(250)
Balance at December 31, 2013	$ 0