Employee Stock Purchase Plan (Details) - Employee Stock Purchase Plan [Member] - USD ($)	6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Maximum Employee Subscription Rate	15.00%
Maximum Employee Subscription	$ 25,000
Purchase Price of Common Stock, Percent	85.00%
Issuance of common stock under Employee Stock Purchase Plan (Shares)	297,013	184,079
Proceeds, Issuance of Shares, Share-based Payment Arrangement, Excluding Option Exercised	$ 947,000	$ 2,000,000.0