Plan of Restructuring (Details) - Amounts expensed and paid for restructuring costs (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Dec. 31, 2012
Plan of Restructuring (Details) - Amounts expensed and paid for restructuring costs [Line Items]
Restructuring Balance	$ 162	$ 205
Provision	50
Payment and Other Adjustment	93
Employee Severance [Member]
Plan of Restructuring (Details) - Amounts expensed and paid for restructuring costs [Line Items]
Restructuring Balance	162	181
Provision	40
Payment and Other Adjustment	59
Other Fees [Member]
Plan of Restructuring (Details) - Amounts expensed and paid for restructuring costs [Line Items]
Restructuring Balance		24
Provision	10
Payment and Other Adjustment	$ 34