Additional paid in capital - Fair Value of Stock Options (Details) - USD ($)	3 Months Ended	6 Months Ended	12 Months Ended
Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019	Dec. 31, 2019	Dec. 30, 2018	Dec. 31, 2017
Fair Value of Stock Options [Abstract]
Interest expense		$ 1,085,371		$ 1,085,371	$ 3,243,812
Product development	18,725	1,047,981	18,804	1,048,318	1,243,644	186,476	66,800
Professional expense	391,843	193,485	391,843	392,677	392,677	401,151	52,492
General, selling and administration		541,209		805,865	1,244,636	993,716	80,938
Total	$ 410,568	$ 2,868,046	$ 410,647	$ 3,332,231	$ 6,124,769	$ 1,581,343	$ 200,230

The costs incurred in a planned search or critical investigation aimed at discovery of new knowledge with the hope that such knowledge will be useful in developing a new product or service, a new process or technique, or in bringing about a significant improvement to an existing product or process; or to translate research findings or other knowledge into a plan or design for a new product or process or for a significant improvement to an existing product or process whether intended for sale or the entity's use, during the reporting period charged to research and development projects, excluding in-process research and development acquired in a business combination consummated during the period. Excludes software research and development, which has a separate concept.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 730
-SubTopic 10
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6420194&loc=d3e21568-108373

Name:	us-gaap_ResearchAndDevelopmentExpenseExcludingAcquiredInProcessCost
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration