Consolidated Statements of Stockholders' Equity - 3 months ended Mar. 31, 2019 - USD ($) shares in Thousands, $ in Thousands	Total	Common Stock	Paid-in Capital	Retained Earnings
Balance at Dec. 31, 2018	$ 247,499	$ 208	$ 0	$ 247,291
Balance (in shares) at Dec. 31, 2018		51,991
Net income	10,902
Stock options exercised and restricted stock awards granted	4,010	$ 1	4,009
Stock options exercised and restricted stock awards granted (in shares)		237
Share-based compensation	2,030		2,030
Stock repurchased and retired	(5,071)	$ (1)	(5,070)	0
Stock repurchased and retired (in shares)		(129)
Balance at Mar. 31, 2019	$ 259,370	$ 208	$ 969	$ 258,193
Balance (in shares) at Mar. 31, 2019		52,099