Note 7 - Regulatory Matters (Tables)

6 Months Ended

Jun. 30, 2013

Disclosure Text Block [Abstract]

Schedule of Compliance with Regulatory Capital Requirements under Banking Regulations [Table Text Block]

	Actual					Minimum Required For Capital Adequacy Purposes					To be Categorized as Well Capitalized under Prompt Corrective Action Provisions
	Amount		Ratio			Amount		Ratio			Amount		Ratio
	(Dollars in thousands)
As of June 30, 2013
Total risk-based capital ratio
MetroCorp Bancshares, Inc.	$	217,914		17.10	%	$	101,953		8.00	%	$	N/A		N/A	%
MetroBank, N.A.		149,083		16.07			74,199		8.00			92,749		10.00
Metro United Bank		54,222		15.73			27,582		8.00			34,477		10.00
Tier 1 risk-based capital ratio
MetroCorp Bancshares, Inc.		201,902		15.84			50,977		4.00		N/A		N/A
MetroBank, N.A.		137,437		14.82			37,100		4.00			55,649		6.00
Metro United Bank		49,882		14.47			13,791		4.00			20,686		6.00
Leverage ratio
MetroCorp Bancshares, Inc.		201,902		12.87			62,743		4.00		N/A		N/A
MetroBank, N.A.		137,437		12.09			45,479		4.00			56,848		5.00
Metro United Bank		49,882		11.55			17,273		4.00			21,591		5.00

As of December 31, 2012
Total risk-based capital ratio
MetroCorp Bancshares, Inc.	$	212,083	17.95	%	$	94,509	8.00	%	$	N/A	N/A%
MetroBank, N.A.		152,613	17.80			68,587	8.00			85,734		10.00
Metro United Bank		52,714	16.34			25,814	8.00			32,267		10.00
Tier 1 risk-based capital ratio
MetroCorp Bancshares, Inc.		197,077	16.68			47,255	4.00		N/A		N/A
MetroBank, N.A.		141,702	16.53			34,293	4.00			51,440		6.00
Metro United Bank		48,636	15.07			12,907	4.00			19,360		6.00
Leverage ratio
MetroCorp Bancshares, Inc.		197,077	13.18			59,812	4.00		N/A		N/A
MetroBank, N.A.		141,702	12.70			44,613	4.00			55,766		5.00
Metro United Bank		48,636	12.76			15,243	4.00			19,053		5.00