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Stock-Based Compensation - Narrative (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Feb. 28, 2019	Jan. 31, 2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares were available for grant under two plans (in shares)	1,400,000
Shares surrendered to the Company (in shares)	16,671
Numbers of shares surrendered (in shares)	1,341
Stock-based employee compensation	$ 1.3	$ 1.1
Unrecognized compensation cost	$ 12.8
Remaining vesting period over which cost expected to be recognized	3 years 1 month 27 days
Stock Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total intrinsic value of options exercised	$ 1.8	$ 1.1
Tax benefit for impact of share based compensation	$ 0.3
Long Term Incentive Plan 2011
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of share awards authorized (in shares)			3,000,000	1,500,000