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3. Property, Plant and Equipment (Details 1)	3 Months Ended
	Mar. 31, 2019
Plant and Buildings | Minimum
Depreciation (years)	20 years
Plant and Buildings | Maximum [Member]
Depreciation (years)	30 years
Machinery and Equipment | Minimum
Depreciation (years)	5 years
Machinery and Equipment | Maximum [Member]
Depreciation (years)	7 years
Furniture and Fixtures | Minimum
Depreciation (years)	3 years
Furniture and Fixtures | Maximum [Member]
Depreciation (years)	5 years

X

- Definition

Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

X

- Details

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Namespace Prefix:
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Balance Type:
Period Type:

X

- Details

Name:	srt_RangeAxis=srt_MinimumMember
Namespace Prefix:
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Balance Type:
Period Type:

X

- Details

Name:	srt_RangeAxis=srt_MaximumMember
Namespace Prefix:
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Balance Type:
Period Type:

X

- Details

Name:	us-gaap_ConcentrationRiskByTypeAxis=us-gaap_MachineryAndEquipmentMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

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Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: