Equity Transactions - Additional Information (Details) $ / shares in Units, $ in Thousands			3 Months Ended
	Feb. 26, 2020 $ / shares	Feb. 03, 2020 day $ / shares shares	Mar. 31, 2020 USD ($) $ / shares shares	Mar. 31, 2019 USD ($) $ / shares
Equity, Class of Treasury Stock [Line Items]
Preferred stock conversion, threshold consecutive trading days | day		20
Common stock cash dividends declared per share (in $ per share) | $ / shares	$ 0.67		$ 0.67	$ 0.55
Repurchases of common shares (in shares)			110,956
Weighted average price (in $ per share) | $ / shares			$ 90.10
Total cost of shares repurchased | $			$ 10,000	$ 14,999
Shares available for repurchase (in shares)			141,482
Convertible preferred stock
Equity, Class of Treasury Stock [Line Items]
Preferred stock, shares issuable upon conversion (in shares)		1,150,000
Conversion ratio		0.7938
Conversion price of stock (in $ per share) | $ / shares		$ 125.97
Common stock
Equity, Class of Treasury Stock [Line Items]
Shares issued during period, conversion of convertible preferred stock (in shares)		912,870