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Cash includes currency on hand as well as demand deposits with banks or financial institutions. It also includes other kinds of accounts that have the general characteristics of demand deposits in that the customer may deposit additional funds at any time and effectively may withdraw funds at any time without prior notice or penalty. Cash equivalents, excluding items classified as marketable securities, include short-term, highly liquid Investments that are both readily convertible to known amounts of cash, and so near their maturity that they present minimal risk of changes in value because of changes in interest rates. Generally, only investments with original maturities of three months or less qualify under that definition. Original maturity means original maturity to the entity holding the investment. For example, both a three-month US Treasury bill and a three-year Treasury note purchased three months from maturity qualify as cash equivalents. However, a Treasury note purchased three years ago does not become a cash equivalent when its remaining maturity is three months. Short-term investments, exclusive of cash equivalents, generally consist of marketable securities intended to be sold within one year (or the normal operating cycle if longer) and may include trading securities, available-for-sale securities, or held-to-maturity securities (if maturing within one year), as applicable.

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Fair value, after the effects of master netting arrangements, of a financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset, expected to be settled after one year or the normal operating cycle, if longer. Includes assets not subject to a master netting arrangement and not elected to be offset.

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The parent entity's interest in net assets of the subsidiary, expressed as a percentage.

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Number of operating segments. An operating segment is a component of an enterprise: (a) that engages in business activities from which it may earn revenues and incur expenses (including revenues and expenses relating to transactions with other components of the same enterprise), (b) whose operating results are regularly reviewed by the enterprise's chief operating decision maker to make decisions about resources to be allocated to the segment and assess its performance, and (c) for which discrete financial information is available. An operating segment may engage in business activities for which it has yet to earn revenues, for example, start-up operations may be operating segments before earning revenues.

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The consolidated profit or loss for the period, net of income taxes, including the portion attributable to the noncontrolling interest.

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Basis of Presentation and Significant Accounting Policies (Details)	3 Months Ended		6 Months Ended
	Jun. 30, 2020 USD ($)	Jun. 30, 2019 USD ($)	Jun. 30, 2020 USD ($) segment	Jun. 30, 2019 USD ($)	Apr. 23, 2020 USD ($)	Dec. 31, 2019 USD ($)	Oct. 31, 2018	Sep. 30, 2018	Dec. 31, 2017
Basis of Presentation and Significant Accounting Policies
Accumulated deficit	$ 115,344,284		$ 115,344,284			$ 104,597,748
Net loss	4,536,818	$ 4,944,905	10,910,238	$ 10,763,986
Cash, cash equivalents and short term investments	47,000,000		47,000,000
Derivative warrant liability	$ 47,939		$ 47,939
Number of operating segments \| segment			1
Maximum
Basis of Presentation and Significant Accounting Policies
Aggregate public offering price					$ 150,000,000
At The Market Offerings \| Maximum
Basis of Presentation and Significant Accounting Policies
Percentage of commission fees to sales agent					3.0
Pelican Therapeutics, Inc.
Basis of Presentation and Significant Accounting Policies
Ownership interest in subsidiary	85.00%		85.00%			85.00%
Pelican Therapeutics, Inc.
Basis of Presentation and Significant Accounting Policies
Percentage of voting interests acquired in acquisition							85.00%	80.00%	80.00%