|
Capital Requirements And Regulatory Agreements (Southwest’s and Bank SNB's Actual Capital Amounts And Ratios) (Details) (USD $)
In Thousands, unless otherwise specified
|
Dec. 31, 2014
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Dec. 31, 2013
|
| Southwest [Member] |
|
|
| Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items] |
|
|
| Total Capital, Actual, Amount |
$ 334,348 |
$ 310,867 |
| Total Capital to risk-weighted assets, Actual, Ratio |
20.96% |
21.59% |
| Total Capital, To Be Well Capitalized, Amount |
159,504 |
143,993 |
| Total Capital to risk-weighted assets, To Be Well Capitalized, Ratio |
10.00% |
10.00% |
| Total Capital, For Capital Adequacy Purposes, Amount |
127,603 |
115,194 |
| Total Capital to risk-weighted assets, For Capital Adequacy Purposes, Ratio |
8.00% |
8.00% |
| Tier 1 Capital, Actual, Amount |
314,216 |
292,051 |
| Tier 1 Capital to risk-weighted assets, Actual, Ratio |
19.70% |
20.28% |
| Tier 1 Capital, To Be Well Capitalized, Amount |
95,702 |
86,396 |
| Tier 1 Capital to risk-weighted assets, To Be Well Capitalized, Ratio |
6.00% |
6.00% |
| Tier 1 Capital, For Capital Adequacy Purposes, Amount |
63,801 |
57,597 |
| Tier 1 Capital to risk-weighted assets, For Capital Adequacy Purposes, Ratio |
4.00% |
4.00% |
| Tier 1 Leverage, Actual, Amount |
314,216 |
292,051 |
| Tier 1 Leverage to average assets, Actual, Ratio |
16.45% |
14.86% |
| Tier 1 Leverage, To Be Well Capitalized, Amount |
95,534 |
98,246 |
| Tier 1 Leverage to average assets, To Be Well Capitalized, Ratio |
5.00% |
5.00% |
| Tier 1 Leverage, For Capital Adequacy Purposes, Amount |
76,428 |
78,597 |
| Tier 1 Leverage to average assets, For Capital Adequacy Purposes, Ratio |
4.00% |
4.00% |
| Bank SNB [Member] |
|
|
| Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items] |
|
|
| Total Capital, Actual, Amount |
298,224 |
284,388 |
| Total Capital to risk-weighted assets, Actual, Ratio |
18.81% |
19.83% |
| Total Capital, To Be Well Capitalized, Amount |
158,518 |
143,413 |
| Total Capital to risk-weighted assets, To Be Well Capitalized, Ratio |
10.00% |
10.00% |
| Total Capital, For Capital Adequacy Purposes, Amount |
126,814 |
114,730 |
| Total Capital to risk-weighted assets, For Capital Adequacy Purposes, Ratio |
8.00% |
8.00% |
| Tier 1 Capital, Actual, Amount |
278,214 |
266,132 |
| Tier 1 Capital to risk-weighted assets, Actual, Ratio |
17.55% |
18.56% |
| Tier 1 Capital, To Be Well Capitalized, Amount |
95,111 |
86,048 |
| Tier 1 Capital to risk-weighted assets, To Be Well Capitalized, Ratio |
6.00% |
6.00% |
| Tier 1 Capital, For Capital Adequacy Purposes, Amount |
63,407 |
57,365 |
| Tier 1 Capital to risk-weighted assets, For Capital Adequacy Purposes, Ratio |
4.00% |
4.00% |
| Tier 1 Leverage, Actual, Amount |
278,214 |
266,132 |
| Tier 1 Leverage to average assets, Actual, Ratio |
14.64% |
13.62% |
| Tier 1 Leverage, To Be Well Capitalized, Amount |
95,030 |
97,719 |
| Tier 1 Leverage to average assets, To Be Well Capitalized, Ratio |
5.00% |
5.00% |
| Tier 1 Leverage, For Capital Adequacy Purposes, Amount |
$ 76,024 |
$ 78,175 |
| Tier 1 Leverage to average assets, For Capital Adequacy Purposes, Ratio |
4.00% |
4.00% |