Segment, Customer Concentration and Geographical Information (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Revenues generated by each business unit
Revenues	$ 11,012	$ 12,632	$ 31,297	$ 46,528
Wireless [Member]
Revenues generated by each business unit
Revenues	9,559	10,211	26,865	40,000
Productivity & Graphics [Member]
Revenues generated by each business unit
Revenues	1,411	2,365	4,281	6,339
Corporate/Other [Member]
Revenues generated by each business unit
Revenues	$ 42	$ 56	$ 151	$ 189