Consolidated Statements of Stockholders' Equity (USD $) In Thousands, unless otherwise specified		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, 2012		$ 175,825		$ 16,416	$ 218,650	$ 26,251	$ (2,150)	$ (8,462)	$ (74,880)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Income		16,011		0	0	16,011	0	0	0
Other Comprehensive (Loss) Income		(1,831)	[1]	0	0	0	0	(1,831)	0
2% Stock Dividend		0		328	8,152	(8,480)	0	0	0
Cash Dividends Paid	[2]	(9,027)		0	0	(9,027)	0	0	0
Stock Options Exercised, Net		965		0	524	0	0	0	441
Shares Issued Under the Directors' Stock Plan		106		0	64	0	0	0	42
Shares Issued Under the Employee Stock Purchase Plan		348		0	204	0	0	0	144
Shares Issued for Dividend Reinvestment Plans		851		0	525	0	0	0	326
Stock-Based Compensation Expense		281		0	281	0	0	0	0
Tax Benefit for Disposition of Stock Options		17		0	17	0	0	0	0
Purchases of Treasury Stock		(1,512)		0	0	0	0	0	(1,512)
Acquisition of Subsidiaries		233		0	139	0	0	0	94
Allocation of ESOP Stock		416		0	66	0	350	0	0
Stockholders' Equity, Ending Balance at Sep. 30, 2013		182,683		16,744	228,622	24,755	(1,800)	(10,293)	(75,345)
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		16,991		0	0	16,991	0	0	0
Other Comprehensive (Loss) Income		89	[1]	0	0	0	0	89	0
2% Stock Dividend		0		335	8,617	(8,952)	0	0	0
Cash Dividends Paid	[2]	(9,256)		0	0	(9,256)	0	0	0
Stock Options Exercised, Net		1,063		0	619	0	0	0	444
Shares Issued Under the Directors' Stock Plan		101		0	63	0	0	0	38
Shares Issued Under the Employee Stock Purchase Plan		351		0	212	0	0	0	139
Stock-Based Compensation Expense		270		0	270	0	0	0	0
Tax Benefit for Disposition of Stock Options		22		0	22	0	0	0	0
Purchases of Treasury Stock		(2,235)		0	0	0	0	0	(2,235)
Acquisition of Subsidiaries		91		0	56	0	0	0	35
Allocation of ESOP Stock		448		0	98	0	350	0	0
Stockholders' Equity, Ending Balance at Sep. 30, 2014		$ 200,089		$ 17,079	$ 239,247	$ 26,240	$ (1,450)	$ (4,284)	$ (76,743)

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

[2] Cash dividends paid per share have been adjusted for the September 2014 2% stock dividend.