Stock-Based Compensation (Schedule of Non-vested Share Activity) (Details)	6 Months Ended
	Jun. 30, 2021 $ / shares shares
Share-based Compensation Arrangement by Share-based Payment Award, Options, Non-vested [Roll Forward]
Non-vested stock options, Number of Shares, Period Start | shares	353,643
Vested, Number of Shares | shares	(113,516)
Cancelled, Number of Shares | shares	(8,174)
Non-vested stock options, Number of Shares, Period End | shares	231,953
Share-based Compensation Arrangement by Share-based Payment Award, Options, Non-vested, Weighted Average Grant Date Fair Value [Roll Forward]
Non-vested stock options, Weighted Average Fair Value, Period Start | $ / shares	$ 11.66
Vested, Weighted Average Fair Value | $ / shares	10.06
Cancelled, Weighted Average Fair Value | $ / shares	12.25
Non-vested stock options, Weighted Average Fair Value, Period End | $ / shares	$ 12.42