Note 9 - Property and Equipment

12 Months Ended

Dec. 31, 2021

Notes to Financial Statements

Property, Plant and Equipment Disclosure [Text Block]

9.         Property and Equipment

Property and equipment consisted of the following:

	December 31, 2021			December 31, 2020
	(In thousands)
Machinery, manufacturing, and demonstration equipment	$	8,289		$	9,909
Operating lease assets - Senhance System leasing		10,143			8,906
Computer equipment		325			2,297
Furniture		644			640
Leasehold improvements		1,259			2,309
Total property and equipment		20,660			24,061
Accumulated depreciation and amortization		(9,689	)		(13,719	)
Property and equipment, net	$	10,971		$	10,342

Depreciation expense was approximately $2.9 million, $2.9 million and $2.2 million for the years ended December 31, 2021, 2020, 2019, respectively.