FAIR VALUE - Schedule of Financial Assets (Liabilities) Measured at Fair Value (Details) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	$ 236,979	$ 232,975
Loans held for sale	1,222
Cash surrender value of life insurance	26,458	26,301
SBA servicing assets	844
Derivative instrument assets	476
Derivative instrument liabilities	(476)
Mortgage-backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	93,746	89,459
Collateralized mortgage obligations
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	107,607	108,969
Corporate bonds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	19,744	18,954
Assets (liabilities) at fair value on a recurring basis:
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative instrument liabilities		(392)
Assets (liabilities) at fair value on a recurring basis: | Mortgage-backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	93,746	89,459
Assets (liabilities) at fair value on a recurring basis: | Collateralized mortgage obligations
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	107,607	108,969
Assets (liabilities) at fair value on a recurring basis: | Corporate bonds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	19,744	18,954
Assets at fair value on a nonrecurring basis:
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired loans	8,131	10,863
Other real estate owned	632	751
Municipal securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	15,882	15,593
Municipal securities | Assets (liabilities) at fair value on a recurring basis:
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	15,882	15,593
Quoted Prices in Active Markets for Identical Assets (Level 1)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans held for sale	0
Cash surrender value of life insurance	0
SBA servicing assets	0
Derivative instrument assets	0
Derivative instrument liabilities	0
Quoted Prices in Active Markets for Identical Assets (Level 1) | Assets (liabilities) at fair value on a recurring basis:
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative instrument liabilities		0
Quoted Prices in Active Markets for Identical Assets (Level 1) | Assets (liabilities) at fair value on a recurring basis: | Mortgage-backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) | Assets (liabilities) at fair value on a recurring basis: | Collateralized mortgage obligations
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) | Assets (liabilities) at fair value on a recurring basis: | Corporate bonds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) | Assets at fair value on a nonrecurring basis:
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired loans	0	0
Other real estate owned	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) | Municipal securities | Assets (liabilities) at fair value on a recurring basis:
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	0	0
Significant Other Observable Inputs (Level 2)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans held for sale	0
Cash surrender value of life insurance	26,458
SBA servicing assets	0
Derivative instrument assets	476
Derivative instrument liabilities	(476)
Significant Other Observable Inputs (Level 2) | Assets (liabilities) at fair value on a recurring basis:
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative instrument liabilities		(392)
Significant Other Observable Inputs (Level 2) | Assets (liabilities) at fair value on a recurring basis: | Mortgage-backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	93,746	89,459
Significant Other Observable Inputs (Level 2) | Assets (liabilities) at fair value on a recurring basis: | Collateralized mortgage obligations
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	107,607	108,969
Significant Other Observable Inputs (Level 2) | Assets (liabilities) at fair value on a recurring basis: | Corporate bonds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	19,744	18,954
Significant Other Observable Inputs (Level 2) | Assets at fair value on a nonrecurring basis:
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired loans	0	0
Other real estate owned	0	0
Significant Other Observable Inputs (Level 2) | Municipal securities | Assets (liabilities) at fair value on a recurring basis:
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	15,882	15,593
Significant Other Unobservable Inputs (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans held for sale	1,222
Cash surrender value of life insurance	0
SBA servicing assets	844
Derivative instrument assets	0
Derivative instrument liabilities	0
Significant Other Unobservable Inputs (Level 3) | Assets (liabilities) at fair value on a recurring basis:
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative instrument liabilities		0
Significant Other Unobservable Inputs (Level 3) | Assets (liabilities) at fair value on a recurring basis: | Mortgage-backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	0	0
Significant Other Unobservable Inputs (Level 3) | Assets (liabilities) at fair value on a recurring basis: | Collateralized mortgage obligations
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	0	0
Significant Other Unobservable Inputs (Level 3) | Assets (liabilities) at fair value on a recurring basis: | Corporate bonds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	0	0
Significant Other Unobservable Inputs (Level 3) | Assets at fair value on a nonrecurring basis:
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired loans	8,131	10,863
Other real estate owned	632	751
Significant Other Unobservable Inputs (Level 3) | Municipal securities | Assets (liabilities) at fair value on a recurring basis:
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	$ 0	$ 0