Property, Plant and Equipment (Details) (USD $)	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jul. 02, 2011	Jun. 30, 2012	Jul. 02, 2011	Dec. 31, 2011
Components of property, plant and equipment
Total property, plant and equipment, gross	$ 61,601,000		$ 61,601,000		$ 52,255,000
Accumulated depreciation	(19,398,000)		(19,398,000)		(16,734,000)
Total property, plant and equipment, net	42,203,000		42,203,000		35,521,000
Property, Plant and Equipment (Textual) [Abstract]
Depreciation expense	1,200,000	700,000	2,200,000	1,300,000
Land [Member]
Components of property, plant and equipment
Total property, plant and equipment, gross	15,570,000		15,570,000		15,570,000
Building and improvements [Member]
Components of property, plant and equipment
Total property, plant and equipment, gross	19,461,000		19,461,000		19,191,000
Machinery and equipment [Member]
Components of property, plant and equipment
Total property, plant and equipment, gross	21,773,000		21,773,000		14,693,000
Furniture and fixtures [Member]
Components of property, plant and equipment
Total property, plant and equipment, gross	2,307,000		2,307,000		2,285,000
Capital in progress [Member]
Components of property, plant and equipment
Total property, plant and equipment, gross	$ 2,490,000		$ 2,490,000		$ 516,000