Subsequent Events (Narrative) (Details) - USD ($) $ in Thousands			1 Months Ended	12 Months Ended
	Mar. 31, 2021	Feb. 24, 2021	Mar. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Subsequent Event [Line Items]
Proceeds from issuance of preferred stock				$ 39,075	$ 6,038
Cyprium [Member]
Subsequent Event [Line Items]
Proceeds from issuance of preferred stock				$ 8,000
Subsequent Events [Member] | Sentynl Therapeutics, Inc [Member] | Cyprium [Member]
Subsequent Event [Line Items]
Total consideration		$ 9,000
Upfront fees payment		$ 8,000
Percentage of ownership over any FDA priority review voucher		100.00%
Subsequent Events [Member] | Sentynl Therapeutics, Inc [Member] | Cyprium [Member] | Clinical Development and Regulatory Milestones [Member]
Subsequent Event [Line Items]
Payments of milestones		$ 3,000
Subsequent Events [Member] | Sentynl Therapeutics, Inc [Member] | Cyprium [Member] | Achievement of Certain Sales Milestones [Member]
Subsequent Event [Line Items]
Payments of milestones		$ 255,000
Subsequent Events [Member] | 8% Cumulative Convertible Class A Preferred Stock [Member] | Journey [Member]
Subsequent Event [Line Items]
Preferred Stock, dividend rate percentage			8.00%
Common stock's average trading price discount percentage			7.50%
Proceeds from issuance of preferred stock	$ 12,500
Subsequent Events [Member] | 8% Cumulative Convertible Class A Preferred Stock [Member] | Journey [Member] | Minimum [Member]
Subsequent Event [Line Items]
Preferred stock offering, aggregate proceeds			$ 12,500
Number of common shares issuable as Preferred stock dividend			72,849
Subsequent Events [Member] | 8% Cumulative Convertible Class A Preferred Stock [Member] | Journey [Member] | Maximum [Member]
Subsequent Event [Line Items]
Preferred stock offering, aggregate proceeds			$ 30,000
Number of common shares issuable as Preferred stock dividend			174,838
Subsequent Events [Member] | 8% Cumulative Convertible Class A Preferred Stock [Member] | Journey [Member] | Preferred Stock has not been Converted into Journey Common Stock [Member] | Minimum [Member]
Subsequent Event [Line Items]
Preferred stock offering, aggregate proceeds			$ 25,000
Number of common shares issuable as Preferred stock dividend			3,400,000
Subsequent Events [Member] | 8% Cumulative Convertible Class A Preferred Stock [Member] | Journey [Member] | Preferred Stock has not been Converted into Journey Common Stock [Member] | Maximum [Member]
Subsequent Event [Line Items]
Number of common shares issuable as Preferred stock dividend			8,100,000