Stockholders' Equity (Tables)

12 Months Ended

Dec. 31, 2019

Equity [Abstract]

Summary of the Change in the Company's Outstanding Shares of Common Stock

The following is a summary of the change in the Company’s outstanding shares of voting common stock:

	Year Ended December 31,
	2019			2018			2017
	(In thousands)
Outstanding shares of voting common stock at the beginning of year		37,640			37,621			37,544
Exercise of stock options		107			121			262
Issuance of restricted stock, net of shares withheld for    withholding tax payments and cancellations		103			22			39
Treasury shares used for acquisition		146			—			—
Repurchases		(60	)		(124	)		(224	)
Outstanding shares of voting common stock at the end of year		37,936			37,640			37,621