FAIR VALUE - Assets and Liabilities at Fair Value (Details) - USD ($)	Sep. 30, 2020	Dec. 31, 2019
Assets:
Total assets	$ 1,097,154	$ 2,700,207
Quoted prices in active markets for identical assets Level 1
Assets:
Total assets	0	0
Significant other observable inputs Level 2
Assets:
Total assets	0	0
Unobservable inputs Level 3
Assets:
Total assets	1,097,154	2,700,207
Mortgage servicing rights
Assets:
Total assets	1,097,154	2,700,207
Mortgage servicing rights | Quoted prices in active markets for identical assets Level 1
Assets:
Total assets	0	0
Mortgage servicing rights | Significant other observable inputs Level 2
Assets:
Total assets	0	0
Mortgage servicing rights | Unobservable inputs Level 3
Assets:
Total assets	$ 1,097,154	$ 2,700,207