Summary of Significant Accounting Policies - Schedule of Change in Asset Retirement Obligations (Detail) - USD ($)	12 Months Ended
Dec. 31, 2018	Dec. 31, 2017
Asset Retirement Obligation [Abstract]
Balance at beginning of year	$ 178,419	$ 221,254
Inception of asset retirement obligation	69,286
Amortization of interest	(38,301)	19,313
Change in estimate	(99,090)	(75,011)
Effects of exchange rate	17,805	12,863
Balance at end of year	$ 128,119	$ 178,419

Amortization of interest on asset retirement obligation.

No definition available.

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- Definition

Asset retirement obligation inception.

+ References

No definition available.

+ Details

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- Definition

The carrying amount of a liability for an asset retirement obligation. An asset retirement obligation is a legal obligation associated with the disposal or retirement of a tangible long-lived asset that results from the acquisition, construction or development, or the normal operations of a long-lived asset, except for certain obligations of lessees.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 410
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=6392692&loc=d3e7535-110849

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- References

No definition available.

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- Definition

Amount of foreign currency translation gain (loss) which decreases (increases) asset retirement obligations.

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- Definition

Amount of increase (decrease) in the asset retirement obligation from changes in the amount or timing of the estimated cash flows associated with the settlement of the obligation.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 410
-SubTopic 20
-Section 35
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=6392603&loc=d3e7123-110846

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 410
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (c)(4)
-URI http://asc.fasb.org/extlink&oid=6392692&loc=d3e7535-110849

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