Note 10 - Operating Segment Information (Details) - Other Operating Segment Information (USD $) In Thousands, unless otherwise specified	Jun. 30, 2013	Dec. 31, 2012	Jun. 30, 2012
Segment Reporting Information [Line Items]
Net loans	$ 1,156,456	$ 1,075,745	$ 1,066,922
Total assets	1,585,786	1,519,812	1,553,934
Deposits	1,306,163	1,267,030	1,259,470
MetroBank [Member]
Segment Reporting Information [Line Items]
Net loans	807,081		760,874
Total assets	1,131,360		1,161,189
Deposits	943,710		982,195
Metro United [Member]
Segment Reporting Information [Line Items]
Net loans	349,375		306,048
Total assets	456,822		393,163
Deposits	381,041		330,553
Other Segments [Member]
Segment Reporting Information [Line Items]
Net loans	0		0
Total assets	(2,396)		(418)
Deposits	$ (18,588)		$ (53,278)