INCOME TAXES (Valuation Allowance) (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Income Tax Disclosure [Abstract]
Valuation allowance, foreign tax credits	$ 14,127	$ 16,565
Valuation allowance, acquired federal net operating losses	779	779
Valuation allowance, state net operating loss carryforwards	10,429	10,663
Valuation allowance, foreign net operating loss carryforwards	29,839	34,149
Valuation allowance, deferred tax assets of a Canadian subsidiary	11,468	14,922
Valuation allowance, realized and unrealized capital losses	10,402	6,565
Valuation allowance	$ 77,044	$ 83,643