Note 14 - Regulatory Capital (Detail) - Summary of the Bank’s compliance with banking regulatory capital standards: (Savings Bank [Member], USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Savings Bank [Member]
Tier I (leverage) capital:
Capital level (in Dollars)	$ 425,149	$ 410,356
Capital level	9.62%	9.63%
Requirement to be well capitalized (in Dollars)	220,980	213,156
Requirement to be well capitalized	5.00%	5.00%
Excess (in Dollars)	204,169	197,200
Excess	4.62%	4.63%
Tier I risk-based capital:
Capital level (in Dollars)	425,149	410,356
Capital level	14.38%	14.26%
Requirement to be well capitalized (in Dollars)	177,401	172,611
Requirement to be well capitalized	6.00%	6.00%
Excess (in Dollars)	247,748	237,745
Excess	8.38%	8.26%
Total risk-based capital:
Capital level (in Dollars)	456,252	440,700
Capital level	15.43%	15.32%
Requirement to be well capitalized (in Dollars)	295,668	287,684
Requirement to be well capitalized	10.00%	10.00%
Excess (in Dollars)	$ 160,584	$ 153,016
Excess	5.43%	5.32%

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The amount of total capital as defined in the regulations.

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The amount of Total Capital required to be categorized as well as capitalized under the regulatory framework for prompt corrective action.

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The Total risk based capital ratio (total capital divided by risk weighted assets) required to be categorized as "well capitalized", in the regulatory framework for prompt corrective action.

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Total Capital divided by risk weighted assets as defined in the regulations.

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The amount by which the company's Total Capital exceeds the minimum required for capital adequacy purposes.

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The amount of excess Total Capital divided by risk weighted assets which are assets that are weighted for credit risk according to a formula used by the Reserve Bank.

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The amount by which the company's Tier 1 Leverage Capital exceeds the minimum required for capital adequacy purposes.

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The amount by which the company's Tier 1 Risk Based Capital exceeds the minimum required for capital adequacy purposes.

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The amount of excess Tier 1 Risk Based Capital (which consists of the types of financial capital considered the most reliable and liquid, primarily Shareholders' equity. Examples of Tier 1 capital are common stock or unit, preferred stock or unit that is irredeemable and noncumulative, and retained earnings) divided by risk-weighted assets which are assets that are weighted for credit risk according to a formula used by the Reserve Bank.

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Tier 1 Leverage Capital as defined in the regulations. Also called Core Capital.

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Tier 1 Leverage Capital divided by average assets as defined in the regulations.

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Tier 1 Risk Based Capital as defined in the regulations.

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The amount of Tier 1 Risk Based Capital required to be categorized as well capitalized under the regulatory framework for prompt corrective action.

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The Tier 1 capital ratio (Tier 1 capital divided by risk weighted assets) required to be categorized as "well capitalized" under the regulatory framework for prompt corrective action.

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Tier 1 capital divided by risk weighted assets as defined by regulations.

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