OPERATIONS AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Tables)

12 Months Ended

Dec. 31, 2020

Accounting Policies [Abstract]

Changes in allowance for doubtful accounts

Changes in the allowance for credit losses are summarized as follows (in thousands):

	Years Ended December 31,
	2020		2019		2018
Balances at beginning of period	$	186	$	245	$	215
Additions from acquisition	90		—		—
Additions - charged to expense	614		113		104
Deductions - write offs, net of recoveries	(121)		(172)		(74)
Balances at end of period	$	769	$	186	$	245

Schedule of cash and cash equivalents

The foreign cash balances are summarized as follows (denominated in foreign currency, in thousands):

	As of December 31,
	2020	2019
European Union Euros	8,520	1,773
Swiss Francs	138	124
Canadian Dollars	2,993	88
Australian Dollars	159	54
Malaysian Ringgit	364	—

Schedule of property and equipment

We provide for depreciation primarily using the straight-line method by charges to income in amounts that allocate the cost of property and equipment over their estimated useful lives as follows:

Asset Classification	Estimated Useful Life
Building	10 to 43 years
Machinery and equipment	2 to 10 years
Office furniture and equipment	3 to 7 years
Computer hardware and software	3 to 7 years
Leasehold and building improvements	5 to 15 years

Property and equipment, net, consisted of the following (in thousands):

	December 31,
	2020		2019
Land	$	2,590	$	694
Building	12,737		3,845
Machinery and equipment	40,411		28,777
Office furniture and equipment	2,047		1,345
Computer hardware and software	4,773		3,408
Leasehold and building improvements	10,728		10,558
Construction in progress	4		671
Property and equipment, gross	73,290		49,298
Less accumulated depreciation	(37,748)		(33,829)
Total property and equipment, net	$	35,542	$	15,469