Stockholders' Equity - Schedule of Stock Options, Expiry Date and Exercise Prices (Details) - $ / shares	3 Months Ended
Mar. 31, 2019	Mar. 31, 2018	Dec. 31, 2018	Dec. 31, 2017
Stock option exercise prices	$ 0.24	$ 0.17	$ 0.24	$ 0.21
Stock option outstanding	20,121,000	16,353,000	20,121,000	9,625,000
August 2, 2021 [Member]
Stock option expiration date	Aug. 02, 2021	Aug. 02, 2021
Stock option exercise prices	$ 0.11	$ 0.11
Stock option outstanding	3,500,000	3,500,000
February 17, 2022 [Member]
Stock option expiration date	Feb. 17, 2022	Feb. 17, 2022
Stock option exercise prices	$ 0.075	$ 0.075
Stock option outstanding	760,333	760,333
February 17, 2022 [Member]
Stock option expiration date	Feb. 17, 2022	Feb. 17, 2022
Stock option exercise prices	$ 0.09	$ 0.09
Stock option outstanding	1,520,667	1,520,667
March 5, 2023 [Member]
Stock option expiration date	Mar. 05, 2023	Mar. 05, 2023
Stock option exercise prices	$ 0.12	$ 0.12
Stock option outstanding	6,800,000	6,800,000
October 31, 2023 [Member]
Stock option expiration date	Oct. 31, 2023	Oct. 31, 2023
Stock option exercise prices	$ 0.22	$ 0.22
Stock option outstanding	2,165,000
November 30, 2023 [Member]
Stock option expiration date	Nov. 30, 2023	Nov. 30, 2023
Stock option exercise prices	$ 0.27	$ 0.27
Stock option outstanding	2,875,000
November 20, 2024 [Member]
Stock option expiration date	Nov. 20, 2024	Nov. 20, 2024
Stock option exercise prices	$ 0.25	$ 0.25
Stock option outstanding	2,500,000

Date the equity-based award expires, in CCYY-MM-DD format.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (a)(2)
-URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901

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- Definition

Number of options outstanding, including both vested and non-vested options.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
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-Subparagraph (c)(1)(i)-(ii)
-URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901

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- Definition

Weighted average price at which grantees can acquire the shares reserved for issuance under the stock option plan.

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