Property, plant and equipment, excluding construction in progress, net.

No definition available.

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- Definition

Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 360

-SubTopic 10

-Section 50

-Paragraph 1

-Subparagraph (c)

-URI http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.14)

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 14

-Article 5

+ Details

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- Definition

Amount of structure or a modification to a structure under construction. Includes recently completed structures or modifications to structures that have not been placed into service.

+ References

+ Details

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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.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 28

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585

+ Details

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- Definition

Amount before accumulated depreciation, depletion and amortization of 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, and furniture and fixtures.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 360

-SubTopic 10

-Section 50

-Paragraph 1

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.13)

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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- Definition

Amount after accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business to produce goods and services and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 360

-SubTopic 10

-Section 50

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.13)

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 13

-Subparagraph a

-Article 5

Reference 4: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 03

-Paragraph 8

-Article 7

+ Details

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- Definition

Useful life of long lived, physical assets used in the normal conduct of business and not intended for resale, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Examples include, but not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment.

+ References

No definition available.

+ Details

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Property and Equipment, net (Detail) (USD $)	12 Months Ended
Property and Equipment, net (Detail) (USD $)	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 69,835,000us-gaap_PropertyPlantAndEquipmentGross	$ 73,095,000us-gaap_PropertyPlantAndEquipmentGross
Less: Accumulated depreciation	60,284,000	62,206,000
Property, plant and equipment, excluding construction in progress, net	9,551,000	10,889,000
Construction in progress	652,000us-gaap_ConstructionInProgressGross	521,000us-gaap_ConstructionInProgressGross
Total	10,203,000us-gaap_PropertyPlantAndEquipmentNet	11,410,000us-gaap_PropertyPlantAndEquipmentNet
Depreciation expense	2,200,000us-gaap_Depreciation	2,500,000us-gaap_Depreciation	2,400,000us-gaap_Depreciation
Minimum
Property, Plant and Equipment [Line Items]
Estimated Useful Life (in years)	3 years
Maximum
Property, Plant and Equipment [Line Items]
Estimated Useful Life (in years)	30 years
Railroad and equipment
Property, Plant and Equipment [Line Items]
Property and equipment, gross	33,627,000	33,627,000
Railroad and equipment \| Minimum
Property, Plant and Equipment [Line Items]
Estimated Useful Life (in years)	15 years
Railroad and equipment \| Maximum
Property, Plant and Equipment [Line Items]
Estimated Useful Life (in years)	30 years
Machinery and equipment
Property, Plant and Equipment [Line Items]
Property and equipment, gross	16,498,000	18,714,000
Machinery and equipment \| Minimum
Property, Plant and Equipment [Line Items]
Estimated Useful Life (in years)	3 years
Machinery and equipment \| Maximum
Property, Plant and Equipment [Line Items]
Estimated Useful Life (in years)	10 years
Office equipment
Property, Plant and Equipment [Line Items]
Property and equipment, gross	18,844,000	19,154,000
Office equipment \| Minimum
Property, Plant and Equipment [Line Items]
Estimated Useful Life (in years)	3 years
Office equipment \| Maximum
Property, Plant and Equipment [Line Items]
Estimated Useful Life (in years)	10 years
Autos and trucks
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 866,000	$ 1,600,000
Autos and trucks \| Minimum
Property, Plant and Equipment [Line Items]
Estimated Useful Life (in years)	3 years
Autos and trucks \| Maximum
Property, Plant and Equipment [Line Items]
Estimated Useful Life (in years)	10 years