INCOME TAXES - Additional Information (Details)	12 Months Ended
	Dec. 31, 2019 USD ($) Country	Dec. 31, 2018 USD ($)	Dec. 31, 2017 USD ($)
Operating Loss Carryforwards [Line Items]
Foreign tax credits carryforwards	$ 1,500,000
Foreign tax credit carryforwards beginning expiration period	2022
Other tax credits carryforwards	$ 200,000
Tax credit carryforwards expiration period	2038
Deferred tax assets valuation allowances	$ 59,011,000	$ 51,850,000
Deferred taxes provided for earnings of foreign subsidiaries	0
Unrecognized tax benefits related to uncertain tax positions	335,000	$ 169,000	$ 192,000
Change in unrecognizsd tax benefits	$ 0
Number of countries involved in business operations | Country	12
U.S.
Operating Loss Carryforwards [Line Items]
Net operating loss carryforwards	$ 100,100,000
Operating loss carryforwards beginning expiration period	2034