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Property, Plant and Equipment - Additional Information (Detail) (USD $)
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1 Months Ended | 12 Months Ended | ||
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Jun. 30, 2012
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Dec. 31, 2012
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Dec. 31, 2011
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Dec. 31, 2010
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| Property, Plant, and Equipment Disclosure [Line Items] | ||||
| Depreciation expense | $ 12,300,000 | $ 12,500,000 | $ 12,600,000 | |
| Capital Lease Obligations | 800,000 | |||
| Accumulated depreciation on Capital Lease | 135,823,000 | 125,708,000 | ||
| Impairment Charges Land Held For Use | 5,600,000 | 1,200,000 | ||
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Capital Lease
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| Property, Plant, and Equipment Disclosure [Line Items] | ||||
| Depreciation expense | 53,000 | 53,000 | 53,000 | |
| Accumulated depreciation on Capital Lease | $ 291,000 | $ 238,000 | $ 185,000 | |
| X | ||||||||||
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- Definition
Accumulated Depreciation No definition available.
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- Definition
Impairment Charges Land Held For Use No definition available.
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- Details
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- Definition
Amount equal to the present value (the principal) at the beginning of the lease term of minimum lease payments during the lease term (excluding that portion of the payments representing executory costs such as insurance, maintenance, and taxes to be paid by the lessor, together with any profit thereon) net of payments or other amounts applied to the principal through the balance sheet date. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
The amount of expense recognized in the current period that reflects the allocation of the cost of tangible assets over the assets' useful lives. Includes production and non-production related depreciation. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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