Note 10 - Operating Segment Information (Details) - Other Operating Segment Information (USD $) In Thousands, unless otherwise specified	Sep. 30, 2013		Dec. 31, 2012	Sep. 30, 2012
Segment Reporting Information [Line Items]
Net loans (1)	$ 1,163,864		$ 1,075,745
Total assets	1,634,449		1,519,812	1,526,088
Deposits	1,352,468		1,267,030	1,265,057
MetroBank [Member] | Includes Loans Held For Sale [Member]
Segment Reporting Information [Line Items]
Net loans (1)	802,569	[1]		759,904	[1]
MetroBank [Member]
Segment Reporting Information [Line Items]
Total assets	1,146,878			1,128,652
Deposits	957,061			946,206
Metro United [Member] | Includes Loans Held For Sale [Member]
Segment Reporting Information [Line Items]
Net loans (1)	361,455	[1]		311,409	[1]
Metro United [Member]
Segment Reporting Information [Line Items]
Total assets	488,848			396,019
Deposits	411,749			325,646
Other Segments [Member] | Includes Loans Held For Sale [Member]
Segment Reporting Information [Line Items]
Net loans (1)	0	[1]		0	[1]
Other Segments [Member]
Segment Reporting Information [Line Items]
Total assets	(1,277)			1,417
Deposits	(16,342)			(6,795)
Includes Loans Held For Sale [Member]
Segment Reporting Information [Line Items]
Net loans (1)	$ 1,164,024	[1]		$ 1,071,313	[1]

[1] Includes loans held-for-sale.