INCOME TAXES - Federal Income Tax Reserve (Details)	12 Months Ended
	Dec. 31, 2016 USD ($)
Deferred tax liability not provided
Percentage of amount actually used for purposes other than to absorb loan losses, limited to the amount of the reserve, that would be subject to taxation	150.00%
Deferred tax liability not provided	$ 290,000
Uncertain tax positions related to federal and state income tax matters	0
Federal Income Tax
Deferred tax liability not provided
Federal income tax reserve for loan losses at the company's base year	$ 726,000