Consolidated Statements of Stockholders' Equity - 9 months ended Sep. 30, 2018 - USD ($) shares in Thousands, $ in Thousands	Total	Common Stock	Paid-in Capital	Retained Earnings
Balance at Dec. 31, 2017	$ 237,226	$ 210	$ 0	$ 237,016
Balance (in shares) at Dec. 31, 2017		52,422
Net income	30,036
Stock options exercised and restricted stock awards granted	3,504	$ 1	3,503
Stock options exercised and restricted stock awards granted (in shares)		301
Share-based compensation	5,614		5,614
Stock repurchased and retired	(18,360)	$ (2)	(9,117)	(9,241)
Stock repurchased and retired (in shares)		(513)
Dividends	(8,391)			(8,391)
Balance at Sep. 30, 2018	$ 249,629	$ 209	$ 0	$ 249,420
Balance (in shares) at Sep. 30, 2018		52,210