Note 10 - Operating Segment Information (Details) - Selected Operating Segment Information (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Segment Reporting Information [Line Items]
Total interest income	$ 16,061	$ 16,029	$ 46,353	$ 48,608
Total interest expense	2,370	2,381	6,859	7,671
Net interest income	13,691	13,648	39,494	40,937
(Reduction in) provision for loan losses	(655)	(300)	(1,130)	300
Net interest income after provision for loan losses	14,346	13,948	40,624	40,637
Noninterest income	2,089	1,872	5,683	5,435
Noninterest expenses	11,478	11,529	32,488	33,774
Income (loss) before income tax provision	4,957	4,291	13,819	12,298
Provision (benefit) for income taxes	1,509	1,410	4,548	4,023
Net income (loss)	3,448	2,881	9,271	8,275
MetroBank [Member]
Segment Reporting Information [Line Items]
Total interest income	11,404	11,926	33,361	36,483
Total interest expense	1,353	1,483	3,990	4,834
Net interest income	10,051	10,443	29,371	31,649
(Reduction in) provision for loan losses	(800)	(300)	(1,250)	300
Net interest income after provision for loan losses	10,851	10,743	30,621	31,349
Noninterest income	2,115	2,126	6,117	6,188
Noninterest expenses	8,336	8,281	23,362	25,143
Income (loss) before income tax provision	4,630	4,588	13,376	12,394
Provision (benefit) for income taxes	1,517	1,449	4,310	3,921
Net income (loss)	3,113	3,139	9,066	8,473
Metro United [Member]
Segment Reporting Information [Line Items]
Total interest income	4,657	4,096	12,986	12,104
Total interest expense	696	548	1,910	1,793
Net interest income	3,961	3,548	11,076	10,311
(Reduction in) provision for loan losses	145	0	120	0
Net interest income after provision for loan losses	3,816	3,548	10,956	10,311
Noninterest income	321	84	620	260
Noninterest expenses	2,749	2,870	7,805	8,043
Income (loss) before income tax provision	1,388	762	3,771	2,528
Provision (benefit) for income taxes	349	321	1,358	995
Net income (loss)	1,039	441	2,413	1,533
Other Segments [Member]
Segment Reporting Information [Line Items]
Total interest income		7	6	21
Total interest expense	321	350	959	1,044
Net interest income	(321)	(343)	(953)	(1,023)
(Reduction in) provision for loan losses	0	0	0	0
Net interest income after provision for loan losses	(321)	(343)	(953)	(1,023)
Noninterest income	(347)	(338)	(1,054)	(1,013)
Noninterest expenses	393	378	1,321	588
Income (loss) before income tax provision	(1,061)	(1,059)	(3,328)	(2,624)
Provision (benefit) for income taxes	(357)	(360)	(1,120)	(893)
Net income (loss)	$ (704)	$ (699)	$ (2,208)	$ (1,731)