ACCUMULATED OTHER COMPREHENSIVE (LOSS) INCOME (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Jun. 30, 2019	Mar. 31, 2019
AOCI rollforward
Balance	$ (18,746)	$ (16,702)
Change during the period:
Before-tax amount	513	(44)
Adoption of accounting standards (Note 2)			$ 87	$ (356)
Reclassification adjustment, net of taxes:
Amortization of net loss	520	485
Total activity for the period	(1,699)	441
Balance	(20,445)	(16,261)
ASU No. 2018-02, (Topic 220)
Change during the period:
Adoption of accounting standards (Note 2)	(2,732)
Pension Adjustment
AOCI rollforward
Balance	(15,878)	(14,470)
Change during the period:
Before-tax amount
Reclassification adjustment, net of taxes:
Amortization of net loss	520	485
Total activity for the period	(2,212)	485
Balance	(18,090)	(13,985)
Pension Adjustment | ASU No. 2018-02, (Topic 220)
Change during the period:
Adoption of accounting standards (Note 2)	(2,732)
Unrealized Gain (Loss) On Securities
AOCI rollforward
Balance		15
Change during the period:
Before-tax amount		(15)
Reclassification adjustment, net of taxes:
Amortization of net loss
Total activity for the period		(15)
Balance
Foreign Currency Translation
AOCI rollforward
Balance	(2,868)	(2,247)
Change during the period:
Before-tax amount	513	(29)
Reclassification adjustment, net of taxes:
Amortization of net loss
Total activity for the period	513	(29)
Balance	(2,355)	$ (2,276)
Foreign Currency Translation | ASU No. 2018-02, (Topic 220)
Change during the period:
Adoption of accounting standards (Note 2)