Stock-Based Compensation - Restricted Stock Units (Details) - Restricted Stock Units (RSU) - $ / shares	6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019
Restricted Stock Units
Balance at Beginning of Period (in shares)	7,496	3,478
Granted (in shares)	3,827	4,018
Balance at End of Period (in shares)	11,323	7,496
Weighted Average Grant Date Fair Value
Outstanding at Beginning of period (in dollars per share)	$ 31.18	$ 31.62
Granted (in dollars per share)	35.28	30.79
Outstanding at End of period (in dollars per share)	$ 32.57	$ 31.18