Property, Plant and Equipment (Detail) (USD $)	Dec. 31, 2012	Dec. 31, 2011
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 71,674,000	$ 63,476,000
Less accumulated depreciation and amortization	31,565,000	24,624,000
Property, plant and equipment - net	40,109,000	38,852,000
Land
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	650,000	650,000
Building and leasehold improvements
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	19,366,000	14,999,000
Equipment and fixtures
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	51,511,000	47,657,000
Vehicles
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 147,000	$ 170,000

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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