EQUITY AND STOCK COMPENSATION PLANS - Unrestricted Stock Grants (Details) $ in Thousands		1 Months Ended								12 Months Ended
	Jan. 01, 2020 shares	Jan. 31, 2020 USD ($) shares	Oct. 31, 2019 USD ($) installment shares	Sep. 30, 2019 USD ($) installment shares	Jul. 31, 2019 USD ($) shares	Mar. 31, 2019 shares	Jan. 31, 2019 USD ($) shares	Jul. 31, 2018 USD ($) shares	Mar. 31, 2018 shares	Dec. 31, 2019 USD ($) installment shares	Dec. 31, 2018 USD ($) installment shares
EQUITY AND STOCK COMPENSATION PLANS
Stock-based compensation charge										$ 692	$ 580
Unrestricted Stock
EQUITY AND STOCK COMPENSATION PLANS
Unamortized share-based compensation charges											$ 0
Unrestricted Stock | 2019 Grant
EQUITY AND STOCK COMPENSATION PLANS
Unamortized share-based compensation charges										$ 0
2001 Nonqualified Stock Plan | Directors, officers and employees
EQUITY AND STOCK COMPENSATION PLANS
Number of shares granted (in shares) | shares										435,000	0
2001 Nonqualified Stock Plan | Unrestricted Stock
EQUITY AND STOCK COMPENSATION PLANS
Number of shares granted (in shares) | shares										285,500	138,000
2001 Nonqualified Stock Plan | Unrestricted Stock | 2019 Grant | Directors, officers and employees
EQUITY AND STOCK COMPENSATION PLANS
Number of shares granted (in shares) | shares					58,548	143,000
Number of installment | installment										2
Stock-based compensation charge										$ 547
Number of common stock shares surrendered by employees withholding taxes | shares					12,952
Common stock value surrendered by employees withholding taxes					$ 43
2001 Nonqualified Stock Plan | Unrestricted Stock | 2019 Grant | Directors, officers and employees | Subsequent Event
EQUITY AND STOCK COMPENSATION PLANS
Number of shares granted (in shares) | shares		56,605
Number of common stock shares surrendered by employees withholding taxes | shares		14,895
Common stock value surrendered by employees withholding taxes		$ 50
2001 Nonqualified Stock Plan | Unrestricted Stock | 2019 Grant one | Officer
EQUITY AND STOCK COMPENSATION PLANS
Number of shares granted (in shares) | shares			7,500	15,000
Number of installment | installment			1	1
Stock-based compensation charge			$ 22	$ 41
2001 Nonqualified Stock Plan | Unrestricted Stock | 2019 Grant one | Officer | Subsequent Event
EQUITY AND STOCK COMPENSATION PLANS
Number of shares granted (in shares) | shares	7,500	15,000
2001 Nonqualified Stock Plan | Unrestricted Stock | 2019 Grant two | Officer
EQUITY AND STOCK COMPENSATION PLANS
Number of shares granted (in shares) | shares			40,000	80,000
Number of installment | installment			4	4
Share Based Compensation Expense for the Total Grant			$ 117	$ 220
Stock-based compensation charge			7	16
Unamortized share-based compensation charges			$ 110	$ 204
2001 Nonqualified Stock Plan | Unrestricted Stock | February 2017 grant | Directors, officers and employees
EQUITY AND STOCK COMPENSATION PLANS
Number of shares granted (in shares) | shares							55,278	57,592	138,000
Number of installment | installment											2
Stock-based compensation charge											$ 580
Number of common stock shares surrendered by employees withholding taxes | shares							13,722	11,408
Common stock value surrendered by employees withholding taxes							$ 50	$ 51
2001 Nonqualified Stock Plan | Performance Share Awards | Officer
EQUITY AND STOCK COMPENSATION PLANS
Number of shares granted (in shares) | shares			10,000	20,000
Share Based Compensation Expense for the Total Grant			$ 29	$ 55
Stock-based compensation charge			15	31
Unamortized share-based compensation charges			$ 14	$ 24