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Stockholders' Equity Stockholders' Equity (Tables) | 12 Months Ended
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Mar. 31, 2017
Stockholders' Equity Note [Abstract] |
Schedule of Compliance with Regulatory Capital Requirements under Banking Regulations | The table below presents the Bank's regulatory capital ratios at March 31, 2017 and 2016.
|  | March 31, 2017 |  | March 31, 2016 Restated (1)
($ in thousands) |  | Amount |  | Ratio |  | Amount |  | Ratio
Tier 1 leverage capital - Restated (1) |  |  |  |  |  |  |  |
Regulatory capital |  | $ | 61,960 |  |  | 8.98 | % |  | $ | 63,931 |  |  | 8.60 | %
Individual minimum capital requirement |  | 62,092 |  |  | 9.00 | % |  |  |  | N/A |
Minimum capital requirement |  | 27,597 |  |  | 4.00 | % |  | 29,740 |  |  | 4.00 | %
Excess |  | 34,363 |  |  | 4.98 | % |  | 34,191 |  |  | 4.60 | %
Common equity Tier 1 - Restated (1) |  |  |  |  |  |  |  |
Regulatory capital |  | $ | 61,960 |  |  | 11.88 | % |  | $ | 63,931 |  |  | 12.18 | %
Minimum capital requirement |  | 23,470 |  |  | 4.50 | % |  | 23,622 |  |  | 4.50 | %
Excess |  | 38,490 |  |  | 7.38 | % |  | 40,309 |  |  | 7.68 | %
Tier 1 risk-based capital - Restated (1) |  |  |  |  |  |  |  |
Regulatory capital |  | $ | 61,960 |  |  | 11.88 | % |  | $ | 63,931 |  |  | 12.18 | %
Minimum capital requirement |  | 31,294 |  |  | 6.00 | % |  | 31,496 |  |  | 6.00 | %
Excess |  | 30,666 |  |  | 5.88 | % |  | 32,435 |  |  | 6.18 | %
Total risk-based capital - Restated (1) |  |  |  |  |  |  |  |
Regulatory capital |  | $ | 67,020 |  |  | 12.85 | % |  | $ | 71,163 |  |  | 13.56 | %
Individual minimum capital requirement |  | 62,588 |  |  | 12.00 | % |  |  |  | N/A |
Minimum capital requirement |  | 41,725 |  |  | 8.00 | % |  | 41,995 |  |  | 8.00 | %
Excess |  | 25,295 |  |  | 4.85 | % |  | 29,168 |  |  | 5.56 | %
(1) March 31, 2016 balances have been restated from previously reported results to correct for material and certain other errors from prior periods. Refer to Notes 1 and 19 for further detail.

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- Definition Tabular disclosure of the capital amounts and ratios as of the balance sheet date, indicating whether the entity or entities are in compliance with regulatory capital requirements, by entity. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 505 -Section 50 -Paragraph 1B -URI http://asc.fasb.org/extlink&oid=84167132&loc=SL5958570-112826 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 505 -Section 50 -Paragraph 1 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=84167132&loc=SL5958568-112826 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 505 -Section 50 -Paragraph 1H -Subparagraph (c)(2) -URI http://asc.fasb.org/extlink&oid=84167132&loc=d3e65071-112826 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 505 -Section 50 -Paragraph 1G -URI http://asc.fasb.org/extlink&oid=84167132&loc=SL5958577-112826 + Details
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