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Earnings Per Share - Narrative (Details) - USD ($) $ / shares in Units, $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018	Feb. 22, 2019	May 04, 2018
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Number of shares repurchased (in shares)	84,791
Value of stock repurchased	$ 1.1
Average market price of common stock repurchased (in dollars per share)	$ 12.44
Stock Options
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities (in shares)	951,607	544,635	349,312
Deferred Compensation, Share-based Payments
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Number of units allocated to stock unit fund (in shares)	52,426
May 2018 Repurchase Program
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Number of shares authorized for repurchase (in shares)					75,000,000
February 2019 Repurchase Program
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Number of shares authorized for repurchase (in shares)				75,000,000