Stock-Based Compensation (Employee Stock Purchase Plan) (Details)	12 Months Ended
	Dec. 31, 2019 shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Maximum shares authorized	1,500,000
Shares available for future issuance	1,400,000
2012 Employee Stock Purchase Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Offering periods	3 months
Purchase price (as a percent)	95.00%
Maximum shares authorized	2,500,000
Employee purchased shares	12,400
Shares available for future issuance	2,400,000