Note 3 - Securities (Detail) - Certain Characteristics and Metrics of the CDOs as of December 31, 2011 (USD $)	12 Months Ended
	Dec. 31, 2011
Original Par	$ 6,750,000	[1]
Amortized Cost		[1]
Fair Value		[1]
Number of Banks/Insurers		[1]
% of Banks/Insurers Currently Performing		[1]
Actual Deferrals and Defaults as a % of the Original Collateral		[1],[2]
Expected Deferrals and Defaults as a % of the Remaining Performing Collateral		[1],[2]
Excess Subordination as a % of the Remaining Performing Collateral		[1],[3]
No-1-C-1 [Member]
Original Par	17,500,000
Amortized Cost	7,140,000
Fair Value	3,000,000
Number of Banks/Insurers	34
% of Banks/Insurers Currently Performing	0.739
Actual Deferrals and Defaults as a % of the Original Collateral	15.80%	[2]
Expected Deferrals and Defaults as a % of the Remaining Performing Collateral	24.50%	[2]
Excess Subordination as a % of the Remaining Performing Collateral	0.00%	[3]
No-2-C-1 [Member]
Original Par	15,000,000
Amortized Cost	7,132,000
Fair Value	1,494,000
Number of Banks/Insurers	47
% of Banks/Insurers Currently Performing	0.825
Actual Deferrals and Defaults as a % of the Original Collateral	16.10%	[2]
Expected Deferrals and Defaults as a % of the Remaining Performing Collateral	23.50%	[2]
Excess Subordination as a % of the Remaining Performing Collateral	0.00%	[3]
No-3-C-1 [Member]
Original Par	15,000,000
Amortized Cost	13,069,000
Fair Value	3,080,000
Number of Banks/Insurers	48
% of Banks/Insurers Currently Performing	0.774
Actual Deferrals and Defaults as a % of the Original Collateral	9.00%	[2]
Expected Deferrals and Defaults as a % of the Remaining Performing Collateral	16.80%	[2]
Excess Subordination as a % of the Remaining Performing Collateral	7.20%	[3]
No-4-B1 [Member]
Original Par	15,000,000
Amortized Cost	13,922,000
Fair Value	3,900,000
Number of Banks/Insurers	35
% of Banks/Insurers Currently Performing	0.556
Actual Deferrals and Defaults as a % of the Original Collateral	37.30%	[2]
Expected Deferrals and Defaults as a % of the Remaining Performing Collateral	32.30%	[2]
Excess Subordination as a % of the Remaining Performing Collateral	0.00%	[3]
No-5-C [Member]
Original Par	10,000,000
Amortized Cost	1,317,000
Fair Value	303,000
Number of Banks/Insurers	33
% of Banks/Insurers Currently Performing	0.589
Actual Deferrals and Defaults as a % of the Original Collateral	45.40%	[2]
Expected Deferrals and Defaults as a % of the Remaining Performing Collateral	31.30%	[2]
Excess Subordination as a % of the Remaining Performing Collateral	0.00%	[3]
No-6-C [Member]
Original Par	6,500,000
Amortized Cost	6,179,000
Fair Value	1,617,000
Number of Banks/Insurers	54
% of Banks/Insurers Currently Performing	0.684
Actual Deferrals and Defaults as a % of the Original Collateral	24.30%	[2]
Expected Deferrals and Defaults as a % of the Remaining Performing Collateral	12.70%	[2]
Excess Subordination as a % of the Remaining Performing Collateral	9.80%	[3]
Total Class [Member]
Original Par	85,750,000
Amortized Cost	48,759,000
Fair Value	$ 13,394,000

[1] Characteristics and metrics are not reported for this CDO since the security had an amortized cost and fair value of zero as of December 31, 2011.

[2] Deferrals and defaults are provided net of recoveries. No recovery is assumed for collateral that has already defaulted. For deferring collateral, the Company assumes a recovery rate of 10% of par for banks, thrifts, and other depository institutions and 15% of par for insurance companies.

[3] Excess subordination represents additional defaults in excess of current defaults that the CDO can absorb before the security experiences any credit impairment. The excess subordination percentage is calculated by dividing the amount of potential additional loss that can be absorbed (before the receipt of all expected future principal and interest payments is affected) by the total balance of performing collateral. Even with excess subordination, the CDO could experience an OTTI charge if future deterioration of underlying collateral in excess of current excess subordination is anticipated.