Balance Sheet Components - Goodwill (Details) - USD ($)	12 Months Ended
Dec. 31, 2019	Dec. 31, 2018
Goodwill
Beginning balance	$ 5,210,821
Impairment	$ 0	$ (5,210,821)
Ending balance		$ 5,210,821

Amount of loss from the write-down of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration