Stock Repurchases (Details) - USD ($)	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Feb. 06, 2017
Stock Repurchases [Abstract]
Stock repurchase program, authorized repurchase amount			$ 150,000,000.0
Stock repurchased during period (in shares)	95,000	996,773
Stock repurchased during period, value	$ 4,200,000	$ 49,600,000
Stock repurchase program, remaining authorized repurchase amount	$ 80,100,000