GKCE ACQUISITION - Schedule of Purchase Price Consideration (Details) - USD ($) $ in Thousands		12 Months Ended
	Jun. 12, 2020	Dec. 31, 2020
Business Acquisition [Line Items]
First working capital payment		$ (43)
GKCE acquisition
Business Acquisition [Line Items]
Cash and cash equivalents	$ 432
Accounts receivable	854	27
Prepaid expense and other	22
Property, plant and equipment, additions	723
Goodwill	1,265
Total assets acquired	3,374
Accounts payable	(193)
Income taxes payable	(141)
Deferred income taxes	(66)
Employee compensation and benefits	(91)
Total liabilities assumed	(491)	$ (13)
Consideration allocated to assets acquired and liabilities assumed	2,883
First working capital payment	(515)
Estimated subsequent working capital payment	(368)
Base purchase consideration	2,000
GKCE acquisition | Building
Business Acquisition [Line Items]
Property, plant and equipment, additions	385
GKCE acquisition | Land
Business Acquisition [Line Items]
Property, plant and equipment, additions	19
GKCE acquisition | Medical equipment
Business Acquisition [Line Items]
Property, plant and equipment, additions	319
GKCE acquisition | Purchased intangible assets
Business Acquisition [Line Items]
Purchased intangible assets	$ 78