Condensed Consolidated Statements of Changes In Stockholders' Equity (USD $) In Thousands, unless otherwise specified	Total	Common Stock	Warrants	Additional Paid-In Capital	Retained Earnings	Accumulated Other Comprehensive Income (Loss)
Beginning Balance at Dec. 31, 2010	$ 407,569	$ 24,047	$ 3,699	$ 177,344	$ 205,099	$ (2,620)
Net income	15,587				15,587
Other comprehensive income, net of tax	8,104					8,104
Common stock dividends ($0.22 and $0.16 per share for six month ended June 30, 2012 and 2011 respectively)	(3,884)				(3,884)
Stock compensation expense	590			590
Stock warrant redemption	(4,449)		(3,699)	(750)
Common stock issued pursuant to:
Stock option plan (1,217 and 1,765 shares for six month ended June 30, 2012 and 2011 respectively)	21	2		19
Employee stock purchase plan (16,341 and 16,448 shares for six month ended June 30, 2012 and 2011 respectively)	262	16		246
Director stock purchase plan (1,083 and 1,833 shares for six month ended June 30, 2012 and 2011 respectively)	32	2		30
Restricted stock (44,987 and 28,450 shares for six month ended June 30, 2012 and 2011 respectively)	(148)	28		(176)
Ending Balance at Jun. 30, 2011	423,684	24,095		177,303	216,802	5,484
Beginning Balance at Dec. 31, 2011	446,109	24,091		177,828	230,942	13,248
Net income	15,683				15,683
Other comprehensive income, net of tax	1,329					1,329
Common stock dividends ($0.22 and $0.16 per share for six month ended June 30, 2012 and 2011 respectively)	(5,358)				(5,358)
Stock compensation expense	740			740
Common stock issued pursuant to:
Acquisition of CommerceFirst Bancorp, Inc. - 732,054 shares	13,023	732		12,291
Stock option plan (1,217 and 1,765 shares for six month ended June 30, 2012 and 2011 respectively)	15	1		14
Employee stock purchase plan (16,341 and 16,448 shares for six month ended June 30, 2012 and 2011 respectively)	250	17		233
Director stock purchase plan (1,083 and 1,833 shares for six month ended June 30, 2012 and 2011 respectively)	19	1		18
Restricted stock (44,987 and 28,450 shares for six month ended June 30, 2012 and 2011 respectively)	(346)	45		(391)
Ending Balance at Jun. 30, 2012	$ 471,464	$ 24,887		$ 190,733	$ 241,267	$ 14,577