Discontinued Operation (Details) (USD $) In Thousands, unless otherwise specified					6 Months Ended
	Jun. 30, 2013	Dec. 31, 2012	Jun. 30, 2013 MicroEdge	Dec. 31, 2012 MicroEdge	Jun. 30, 2013 MicroEdge Facility Exit Costs
Summary of restructuring charges activity during the period
Balance of restructuring accrual at the beginning of the period					$ 4,030
Restructuring charges					(215)
Cash payments					(293)
Adjustment of prior restructuring costs					63
Balance of restructuring accrual at the end of the period					3,585
Restructuring accrual included in current liabilities of discontinued operations	$ 610	$ 262	$ 610	$ 262	$ 500