Note 6 - Loans (Detail) - Loans Outstanding (USD $) In Thousands, unless otherwise specified	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2011	Jun. 30, 2011	Mar. 31, 2011	Dec. 31, 2010
Real estate:
Loans covered by FDIC loss share agreements	$ 128,874		$ 159,688
Loans not covered by FDIC loss share agreements	587,498		574,100	574,100
Loans, net of deferred fees and costs	716,372		733,788
Less: Allowance for loan losses	11,735	11,583	11,713	12,742	12,006	11,924
Total loans, net	704,637		722,075
One-to-Four Family Residential [Member]
Real estate:
Loans covered by FDIC loss share agreements	29,026		34,641
Loans not covered by FDIC loss share agreements	114,321		116,859	116,859
Loans, net of deferred fees and costs	143,347		151,500
Less: Allowance for loan losses	544	534	500	520	528	500
Multifamily Residential Loans [Member]
Real estate:
Loans covered by FDIC loss share agreements	2,882		2,926
Loans not covered by FDIC loss share agreements	17,074		16,759	16,759
Loans, net of deferred fees and costs	19,956		19,685
Less: Allowance for loan losses	150	150	150	200	200	200
Construction Loans [Member]
Real estate:
Loans covered by FDIC loss share agreements	33		1,255
Loans not covered by FDIC loss share agreements	27,114		19,602	19,602
Loans, net of deferred fees and costs	27,147		20,857
Less: Allowance for loan losses	652	650	800	1,190	1,014	1,000
Commercial Land Loans [Member]
Real estate:
Loans covered by FDIC loss share agreements	8,782		13,670
Loans not covered by FDIC loss share agreements	22,885		28,122	28,122
Loans, net of deferred fees and costs	31,667		41,792
Less: Allowance for loan losses	2,463	2,344	2,334	2,223	2,014	2,163
Residential Development [Member]
Real estate:
Loans covered by FDIC loss share agreements	6,026		8,095
Loans not covered by FDIC loss share agreements	10,068		16,444	16,444
Loans, net of deferred fees and costs	16,094		24,539
Less: Allowance for loan losses	2,014	2,064	1,999	2,038	1,996	2,000
Owner Occupied Commercial Real Estate [Member]
Real estate:
Loans covered by FDIC loss share agreements	17,872		20,027
Loans not covered by FDIC loss share agreements	116,435		95,990
Loans, net of deferred fees and costs	134,307		116,017
Non-owner Occupied Commercial Real Estate [Member]
Real estate:
Loans covered by FDIC loss share agreements	47,344		56,285
Loans not covered by FDIC loss share agreements	131,840		129,993
Loans, net of deferred fees and costs	179,184		186,278
Consumer Real Estate Loans [Member]
Real estate:
Loans covered by FDIC loss share agreements	9,457		11,148
Loans not covered by FDIC loss share agreements	99,162		103,521	103,521
Loans, net of deferred fees and costs	108,619		114,669
Less: Allowance for loan losses	1,320	1,372	1,600	1,568	1,551	1,500
Total Real Estate Loans [Member]
Real estate:
Loans covered by FDIC loss share agreements	121,422		148,047
Loans not covered by FDIC loss share agreements	538,899		527,290
Loans, net of deferred fees and costs	660,321		675,337
Commercial Business Loans [Member]
Real estate:
Loans covered by FDIC loss share agreements	4,795		7,866
Loans not covered by FDIC loss share agreements	43,635		41,161	41,161
Loans, net of deferred fees and costs	48,430		49,027
Less: Allowance for loan losses	2,036	2,002	2,000	2,525	2,500	2,500
Other Consumer Loans [Member]
Real estate:
Loans covered by FDIC loss share agreements	2,657		3,775
Loans not covered by FDIC loss share agreements	4,964		5,649	5,649
Loans, net of deferred fees and costs	7,621		9,424
Less: Allowance for loan losses	$ 582	$ 540	$ 500	$ 559	$ 558	$ 500