UNAUDITED CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY (USD $) In Thousands	Total	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Loss, net of tax [Member]	ESOP [Member]	Unearned Restricted Stock Award Common Stock [Member]	Treasury Stock [Member]	Common Stock Held by BMP [Member]
Balance at Dec. 31, 2012		$ 520	$ 239,041	$ 379,166	$ (9,640)	$ (3,007)	$ (3,122)	$ (202,584)	$ (8,800)
Stock options exercised		2	2,060
Forfeited restricted stock award shares returned to treasury stock			0				0	10
Tax benefit of stock plans			71
BMP award distribution									0
Amortization of excess fair value over cost - ESOP stock and stock options expense			292
Net income	10,570			10,570
Cash dividends declared and paid				(4,881)
Reduction in non credit component of OTTI charge, net of taxes	4
Other comprehensive income recognized during the period, net of tax	(219)				219
Amortization of earned portion of ESOP stock						57
Amortization of earned portion of restricted stock awards							526
Balance at Mar. 31, 2013	400,500	522	241,464	384,855	(9,421)	(2,950)	(2,596)	(202,574)	(8,800)
Balance at Dec. 31, 2013	435,506	528	252,253	402,986	(4,759)	(2,776)	(3,193)	(200,520)	(9,013)
Stock options exercised		0	139
Forfeited restricted stock award shares returned to treasury stock			(3)				18	(15)
Tax benefit of stock plans			(14)
BMP award distribution									1
Amortization of excess fair value over cost - ESOP stock and stock options expense			305
Net income	10,034			10,034
Cash dividends declared and paid				(5,011)
Reduction in non credit component of OTTI charge, net of taxes	4
Other comprehensive income recognized during the period, net of tax	(122)				122
Amortization of earned portion of ESOP stock						58
Amortization of earned portion of restricted stock awards							495
Balance at Mar. 31, 2014	$ 441,635	$ 528	$ 252,680	$ 408,009	$ (4,637)	$ (2,718)	$ (2,680)	$ (200,535)	$ (9,012)