Commitments And Contingencies (Details) (USD $)	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Commitments And Contingencies [Line Items]
Lease extension option time frame			5 years
Rent expense	$ 303,000	$ 302,000	$ 606,000	$ 603,000
Equipment purchases commitments			400,000
Minimum [Member]
Commitments And Contingencies [Line Items]
Loss contingency			0
Maximum [Member]
Commitments And Contingencies [Line Items]
Loss contingency			$ 250,000
Hopewell Junction, New York [Member]
Commitments And Contingencies [Line Items]
Area of leased real estate property	37,000		37,000
Lease expiration date			May 31, 2014
Bellevue, Washington [Member]
Commitments And Contingencies [Line Items]
Area of leased real estate property	6,300		6,300
Lease expiration date			Aug. 31, 2014
Santa Clara, California [Member]
Commitments And Contingencies [Line Items]
Area of leased real estate property	2,400		2,400
Lease expiration date			Oct. 31, 2015