Fair Value of Financial Instruments (Other Investments - Pensare) (Narrative) (Details) - Pensare [Member] $ / shares in Units, warrant in Millions		1 Months Ended	12 Months Ended
	Mar. 31, 2020 warrant $ / shares	Apr. 30, 2020 USD ($) shares	Dec. 31, 2017 USD ($)	Apr. 01, 2020 USD ($) $ / shares shares	Dec. 31, 2019
Fair Value, Financial Instruments Measured on a Non-Recurring Basis [Line Items]
Equity investment, ownership percentage			4.00%		21.00%
Derivative instruments, number held | warrant	2.0
Equity investment and warrants, amount paid (in dollars) | $			$ 2,000,000.0
Subsequent Event [Member]
Fair Value, Financial Instruments Measured on a Non-Recurring Basis [Line Items]
Equity investment and warrants, amount paid (in dollars) | $		$ 3,000,000.0
Warrants, exercise price (in dollars per share) | $ / shares				$ 0.01
Number of securities (in shares) | shares		3,000
Principal amount per security | $				$ 1,000
Conversion price (in dollars per share) | $ / shares				$ 3.45
Number of shares called upon conversion of warrant (in shares) | shares				100
Plan [Member]
Fair Value, Financial Instruments Measured on a Non-Recurring Basis [Line Items]
Warrants, exercise price (in dollars per share) | $ / shares	$ 11.50
Common Stock [Member] | Plan [Member]
Fair Value, Financial Instruments Measured on a Non-Recurring Basis [Line Items]
Investment, restriction period (in years)	1 year