Restructuring (Narrative) (Details) (USD $)	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011
Restructuring Cost and Reserve [Line Items]
Restructuring charges	$ 430,000	$ 735,000
Cost Of Revenue [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges		448,000
Operating Expenses [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges	$ 430,000	$ 287,000