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LOANS AND ALLOWANCE FOR LOAN LOSSES - Additional Information (Detail) | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2017 USD ($) note | Dec. 31, 2016 | Dec. 31, 2015
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |
Amount of loan on which review have been made annually | $ 500,000 |  |
Amount of loan on which reviews may require approval | 1,000,000 |  |
Amount of loan on which reviews require approval | $ 250,000 |  |
Loans that are deemed impaired, number of days past due (more than) | 90 days |  |
Number of notes split | note | 2 |  |
Appraisals, required period interval | 18 months |  |
Minimum amount on which annual updated appraisals for classified loans is required | $ 250,000 |  |
Look-back period for historical losses | 5 years | 5 years | 4 years
Maximum |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |
Percentage of loan-to-value ratio upon loan origination | 80.00% |  |
Percentage of loan-to-value ratios of the value of the real estate taken as collateral | 90.00% |  |
Percentage of credit worthiness of the borrower | 43.00% |  |
Percentage of strong loan-to-value | 70.00% |  |
Historical loss percentage adjustment to anticipated loss allocation | 1.50% | 1.50% |
Minimum |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |
Historical loss percentage adjustment to anticipated loss allocation | (1.50%) | (1.50%) |

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- Definition Amount of loan on which review have been made annually. + References No definition available. + Details
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- Definition Amount Of Loan On Which Reviews May Require Approval + References No definition available. + Details
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- Definition Amount Of Loan On Which Reviews Require Approval + References No definition available. + Details
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- Definition Minimum amount on which annual updated appraisals for criticized loans is required. + References No definition available. + Details
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- Definition Percentage of credit worthiness of the borrower. + References No definition available. + Details
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- Definition Percentage of loan to value ratio of value of real estate taken as collateral. + References No definition available. + Details
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- Definition Percentage of loan to value ratio upon loan origination. + References No definition available. + Details
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- Definition Percentage of strong loan to value. + References No definition available. + Details
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- 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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