Consolidated Statements of Stockholders' Equity - 3 months ended Mar. 31, 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	4,260
Stock options exercised and restricted stock awards granted	1,340		1,339
Stock options exercised and restricted stock awards granted (in shares)		105
Share-based compensation	1,724		1,724
Stock repurchased and retired	(4,939)	$ (1)	(3,063)	(1,875)
Stock repurchased and retired (in shares)		(133)
Balance at Mar. 31, 2018	$ 239,611	$ 210	$ 0	$ 239,401
Balance (in shares) at Mar. 31, 2018		52,394