Consolidated Statements of Stockholders' Equity - 9 months ended Sep. 30, 2017 - USD ($) shares in Thousands, $ in Thousands	Total	Common Stock	Paid-in Capital	Retained Earnings
Balance at Dec. 31, 2016	$ 205,898	$ 211	$ 0	$ 205,687
Balance (in shares) at Dec. 31, 2016		52,651
Net income	38,728
Stock options exercised and restricted stock awards granted	1,715		1,715
Stock options exercised and restricted stock awards granted (in shares)		269
Share-based compensation	4,960		4,960
Stock repurchased and retired	(14,184)	$ (1)	(6,675)	(7,508)
Stock repurchased and retired (in shares)		(407)
Dividends	(6,819)			(6,819)
Balance at Sep. 30, 2017	$ 230,298	$ 210	$ 0	$ 230,088
Balance (in shares) at Sep. 30, 2017		52,513