Summary Of Significant Accounting Policies (Components of Property and Equipment) (Details) (USD $)	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Property, Plant and Equipment [Line Items]
Propertyand equipment, gross	$ 18,804,000	$ 14,320,000
Less accumulated depreciation	(11,657,000)	(9,348,000)
Property and equipment, net	7,147,000	4,972,000
Depreciation	2,500,000	2,200,000	1,800,000
Machinery and equipment [Member]
Property, Plant and Equipment [Line Items]
Propertyand equipment, gross	14,810,000	11,577,000
Furniture, fixtures, and computer software [Member]
Property, Plant and Equipment [Line Items]
Propertyand equipment, gross	1,159,000	854,000
Leasehold improvements [Member]
Property, Plant and Equipment [Line Items]
Propertyand equipment, gross	1,926,000	1,034,000
Construction in progress [Member]
Property, Plant and Equipment [Line Items]
Propertyand equipment, gross	$ 909,000	$ 855,000
Minimum [Member]
Property, Plant and Equipment [Line Items]
Useful life	3 years
Maximum [Member]
Property, Plant and Equipment [Line Items]
Useful life	5 years