Share-Based Compensation - Nonvested Options (Details) - $ / shares	3 Months Ended	6 Months Ended
	Jun. 30, 2020	Jun. 30, 2020
Number of Shares
Exercised (in shares)	(7,849)	(98,393)
Weighted-Average Exercise Price Per Share
Weighted-Average Exercise Price Per Share, Exercised (in dollars per share)	$ 6.68	$ 6.43
Non-Vested Stock Options
Number of Shares
Outstanding at beginning of period (in shares)	224,177	246,317
Exercised (in shares)	0	(17,300)
Forfeited (in shares)	0	(4,840)
Outstanding at end of period (in shares)	224,177	224,177
Weighted-Average Exercise Price Per Share
Weighted-Average Exercise Price Per Share, Outstanding (in dollars per share)	$ 13.29	$ 13.31
Weighted-Average Exercise Price Per Share, Exercised (in dollars per share)	0	14.47
Weighted -Average Exercise Price Per Share, Forfeited(in dollars per share)	0	10.33
Weighted-Average Exercise Price Per Share, Outstanding (in dollars per share)	$ 13.29	$ 13.29