Shareholders' Equity - Textual (Details) - USD ($)	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Dec. 31, 2019
Equity [Abstract]
Exercise of stock options, common stock issued (in shares)	100,000	0
Weighted average exercise price, exercised (in USD per share)	$ 1.78
Treasury stock (in shares)	12,253,502		12,253,502
Treasury stock, shares held at cost	$ 18,929,915		$ 18,929,915