Warrants (Summary of Warrants Issued and Warrants Outstanding) (Details)	12 Months Ended
	Dec. 31, 2021 $ / shares shares
Class of Warrant or Right [Line Items]
Outstanding	9,339,821
2016 Warrant Issuance [Member]
Class of Warrant or Right [Line Items]
Issued	2,947,949
Outstanding	1,680,447
Exercise Price | $ / shares	$ 2.60
Expiration	2022-02
2017 Warrant Issuance 1 [Member]
Class of Warrant or Right [Line Items]
Issued	100,000
Outstanding	100,000
Exercise Price | $ / shares	$ 2.25
Expiration	2022-03
2017 Warrant Issuance 2 [Member]
Class of Warrant or Right [Line Items]
Issued	1,650,000
Outstanding	1,650,000
Exercise Price | $ / shares	$ 2.45
Expiration	2022-11
2018 Warrant Issuance [Member]
Class of Warrant or Right [Line Items]
Issued	4,004,329
Outstanding	2,909,374
Exercise Price | $ / shares	$ 1.55
Expiration	2023-07
2019 Warrant Issuance [Member]
Class of Warrant or Right [Line Items]
Issued	6,000,000
Outstanding	3,000,000
Exercise Price | $ / shares	$ 0.78
Expiration	2024-10