Property, Plant and Equipment, Net (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Property, plant and equipment [Abstract]
Property, plant and equipment, gross	$ 72,947	$ 66,143
Less: accumulated depreciation and amortization	(35,712)	(31,861)
Property, plant and equipment, net	37,235	34,282
Depreciation and amortization expense	3,927	3,410	2,916
Building [Member]
Property, plant and equipment [Abstract]
Property, plant and equipment, gross	28,089	19,997
Machinery and equipment [Member]
Property, plant and equipment [Abstract]
Property, plant and equipment, gross	37,334	32,242
Leasehold improvements [Member]
Property, plant and equipment [Abstract]
Property, plant and equipment, gross	3,578	2,330
Construction in progress [Member]
Property, plant and equipment [Abstract]
Property, plant and equipment, gross	$ 3,946	$ 11,574

The cumulative amount of depreciation, depletion and amortization (related to property, plant and equipment, but not including land) that has been recognized in the income statement.

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Gross amount of long-lived physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment.

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- Definition

Amount, net of accumulated depreciation, depletion and amortization, of long-lived physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment.

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