Consolidated Statements of Changes in Stockholders' Equity - 6 months ended Jun. 30, 2015 - USD ($) $ in Thousands	Total	Common Stock [Member]	Retained Earnings (Accumulated Deficit) [Member]	Accumulated Other Comprehensive Income [Member]
BALANCE at Dec. 31, 2014	$ 379,438	$ 384,731	$ (6,816)	$ 1,523
NET INCOME	16,192		16,192
Other comprehensive income, net of tax	491			491
Stock based compensation	912	912
Retirement of restricted stock	(250)	(250)
Exercise of stock options, net of excess tax benefits	172	172
Cash dividends, common stock	(6,095)		(6,095)
BALANCE at Jun. 30, 2015	$ 390,860	$ 385,565	$ 3,281	$ 2,014