Capital Stock and Equity Awards - Summary of Option Activity (Details) - $ / shares	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Weighted- Average Exercise Price
Weighted-average remaining contractual life of options outstanding	2 years 8 months 12 days
Weighted-average remaining contractual life of options exercisable	2 years 8 months 12 days
Options
Shares
Beginning of period (in shares)	643,851	1,115,324
Granted (in shares)	0	0
Exercised (in shares)	0	(125,349)
Forfeited (in shares)	0	(3,759)
End of period (in shares)	643,851	986,216
Exercisable, end of period (in shares)	640,606	926,166
Weighted- Average Exercise Price
Beginning of period (in dollars per share)	$ 30.41	$ 29.02
Granted (in dollars per share)	0	0
Exercised (in dollars per share)	0	29.47
Forfeited (in dollars per share)	0	36.37
End of period (in dollars per share)	30.41	28.94
Exercisable, end of period (in dollars per share)	$ 30.35	$ 28.07
Contractual life (in years)	7 years
Minimum | Options
Weighted- Average Exercise Price
Vesting period (in years)	3 years
Maximum | Options
Weighted- Average Exercise Price
Vesting period (in years)	4 years