Consolidated Statements of Stockholders' Equity - 6 months ended Jun. 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	24,011
Stock options exercised and restricted stock awards granted	1,573		1,573
Stock options exercised and restricted stock awards granted (in shares)		261
Share-based compensation	3,529		3,529
Stock repurchased and retired	(10,434)	$ (1)	(5,102)	(5,331)
Stock repurchased and retired (in shares)		(296)
Dividends	(6,830)			(6,830)
Balance at Jun. 30, 2017	$ 217,747	$ 210	$ 0	$ 217,537
Balance (in shares) at Jun. 30, 2017		52,616