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BASIS OF PRESENTATION (Details) | 3 Months Ended |
--- | --- | ---
Mar. 31, 2014 entity | Sep. 30, 2015 trust
Organization, Consolidation and Presentation of Financial Statements [Abstract] |  |
Number of wholly owned subsidiaries that are statutory business trusts ("the Trusts") | trust |  | 6
MetroCorp |  |
Business combination |  |
Number of acquisitions | 1 |

X
- Definition Represents the number of wholly owned subsidiaries of the entity that are statutory business trusts, which are not consolidated. + References No definition available. + Details
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Balance Type: | na
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X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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Namespace Prefix: | us-gaap_
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Balance Type: | na
Period Type: | duration

X
- Definition The number of businesses acquired by the entity during the period. + References No definition available. + Details
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Namespace Prefix: | us-gaap_
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Balance Type: | na
Period Type: | duration

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- References No definition available. + Details
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Balance Type: | na
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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |