Consolidated Statement of Changes in Stockholders' Equity (Unaudited) (USD $) In Thousands, except Share data		Total	Common Stock [Member]	Additional Paid-in Capital [Member]	Accumulated Earnings [Member]	Accumulated Other Comprehensive Income (Loss) [Member]
Beginning Balance, Value at Dec. 31, 2013		$ 111,330	$ 783	$ 80,718	$ 29,403	$ 426
Beginning Balance, Shares at Dec. 31, 2013		78,286,465	78,286,465
Share-based compensation recognized		665		665
Tax windfall benefit on exercises of stock options		1,482		1,482
Stock options exercised, net of cashless exercise		(716)	3	(719)
Stock options exercised, net of cashless exercise, Shares			345,382
Dividend	[1]	21		21
Net income		35,979			35,979
Cash dividends declared on common stock		(15,681)			(15,681)
Cash dividends paid on common stock, Shares
Other comprehensive loss		(6,951)				(6,951)
Ending Balance, Value at Jun. 30, 2014		$ 126,129	$ 786	$ 82,167	$ 49,701	$ (6,525)
Ending Balance, Shares at Jun. 30, 2014		78,631,847	78,631,847

[1] Related to dividend declared in 2012 and accrued upon vesting of stock options. Such options were forfeited during the six months ended June 30, 2014.