INCOME TAXES - Components of Income Tax Expense (Benefit) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Current:
United States-Federal	$ 460	$ 504	$ (1,559)
United States-State	2	3	(336)
Foreign	4,272	7,611	8,192
Total current income tax expense	4,734	8,118	6,297
Deferred:
United States-Federal	(5,800)	(6,527)	(1,805)
United States-State	(1,402)	(413)	(93)
Foreign	590	(377)	(294)
Total deferred income tax expense (benefit)	(6,612)	(7,317)	(2,192)
Consolidated:
United States-Federal	(5,340)	(6,023)	(3,364)
United States-State	(1,400)	(410)	(429)
Foreign	4,862	7,234	7,898
Total income tax expense (benefit)	(1,878)	801	$ 4,105
Deferred tax assets:
Accounts receivable and inventory allowances	2,348	1,972
Basis in investments	6,939	7,512
Accrued expenses	8,619	4,701
Deferred revenue	27,940	3,141
Employee benefits	8,454	4,363
Other, net	968	744
Net operating losses	41,117	26,582
Tax Credits	1,916	1,997
Operating lease liability	31,207	14,648
Total deferred tax asset	129,508	65,660
Deferred tax liabilities:
Acquired intangible assets, property and equipment	83,423	26,736
Right-of-use asset	29,967	14,594
Prepaid expense	189	209
Total deferred tax liabilities	113,579	41,539
Valuation allowance	(33,642)	(31,014)
Net deferred tax liabilities	(17,713)	(6,893)
Deferred tax assets:
Total deferred tax asset	3,747	3,782
Deferred tax liabilities:
Total deferred tax liabilities	(21,460)	(10,675)
Net deferred tax liabilities	$ (17,713)	$ (6,893)