Consolidated Statements of Stockholders' Equity - USD ($) $ in Thousands		Total		Common Stock [Member]	Additional Paid-In Capital	Retained Earnings	Unallocated ESOP Shares	Accumulated Other Comprehensive Income (Loss)	Treasury Stock
Stockholders' Equity, Beginning Balance at Dec. 31, 2013		$ 192,154		$ 16,744	$ 229,290	$ 27,457	$ (1,800)	$ (4,373)	$ (75,164)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Income		10,844		0	0	10,844	0	0	0
Other Comprehensive Income		884	[1]	0	0	0	0	884	0
Cash Dividends Paid	[2]	(6,169)		0	0	(6,169)	0	0	0
Stock Options Exercised, Net		520		0	308	0	0	0	212
Shares Issued Under the Directors' Stock Plan		101		0	63	0	0	0	38
Shares Issued Under the Employee Stock Purchase Plan		241		0	146	0	0	0	95
Stock-Based Compensation Expense		180		0	180	0	0	0	0
Tax Benefit for Disposition of Stock Options		9		0	9	0	0	0	0
Purchases of Treasury Stock		(1,568)		0	0	0	0	0	(1,568)
Acquisition of Subsidiaries		91		0	56	0	0	0	35
Allocation of ESOP Stock		329		0	(79)	0	(250)	0	0
Stockholders' Equity, Ending Balance at Jun. 30, 2014		197,616
Stockholders' Equity, Beginning Balance at Mar. 31, 2014		197,616		16,744	230,131	32,132	(1,550)	(3,489)	(76,352)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Income		5,524
Other Comprehensive Income	[1]	586
Stockholders' Equity, Ending Balance at Jun. 30, 2014		197,616
Stockholders' Equity, Beginning Balance at Dec. 31, 2014		200,926		17,079	239,721	29,458	(1,450)	(7,166)	(76,716)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Income		12,160		0	0	12,160	0	0	0
Other Comprehensive Income		(5)	[1]	0	0	0	0	(5)	0
Cash Dividends Paid		(6,315)		0	0	(6,315)	0	0	0
Stock Options Exercised, Net		70		0	40	0	0	0	30
Shares Issued Under the Directors' Stock Plan		118		0	73	0	0	0	45
Shares Issued Under the Employee Stock Purchase Plan		249		0	153	0	0	0	96
Stock-Based Compensation Expense		157		0	157	0	0	0	0
Purchases of Treasury Stock		(762)		0	0	0	0	0	(762)
Acquisition of Subsidiaries		0
Allocation of ESOP Stock		349		0	(99)	0	(250)	0	0
Stockholders' Equity, Ending Balance at Jun. 30, 2015		$ 206,947		$ 17,079	$ 240,243	$ 35,303	$ (1,200)	$ (7,171)	$ (77,307)

[1] All amounts are net of tax. Amounts in parentheses indicate debits.

[2] Share and Per Share Amounts have been restated for the September 2014 2% stock dividend.