Plan of Restructuring (Details) - Amounts expensed and paid for restructuring costs (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011
Plan of Restructuring (Details) - Amounts expensed and paid for restructuring costs [Line Items]
Restructuring Balance	$ 205	$ 73
Provision	415
Payment and Other Adjustment	283
Employee Severance [Member]
Plan of Restructuring (Details) - Amounts expensed and paid for restructuring costs [Line Items]
Restructuring Balance	181	43
Provision	349
Payment and Other Adjustment	211
Other Fees [Member]
Plan of Restructuring (Details) - Amounts expensed and paid for restructuring costs [Line Items]
Restructuring Balance	24	30
Provision	66
Payment and Other Adjustment	$ 72