INCOME TAXES - Deferred (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022	Jun. 30, 2021
Deferred tax assets:
Stock-based compensation	$ 1,952	$ 1,846
Net operating losses	4,683	3,184
Foreign tax credits	35,751	33,301
Amortizable tax goodwill	46,821	52,783
Other	5,044	4,575
Total deferred tax assets	94,251	95,689
Valuation allowance	(40,814)	(46,844)
Net deferred tax assets	53,437	48,845
Deferred tax liabilities:
Mineral property basis	(122,543)	(124,373)
Unrealized foreign exchange gains	(582)	(582)
Other	(97)	(143)
Total deferred tax liabilities	(123,222)	(125,098)
Total net deferred taxes	(69,785)	(76,253)
Net operating loss carry forwards	4,700	$ 3,200
Interest and penalties			$ 300
US Foreign
Deferred tax assets:
Valuation allowance	(35,800)
Capital loss
Deferred tax assets:
Valuation allowance	(1,900)
Other tax carryforwards
Deferred tax assets:
Valuation allowance	$ (3,200)