Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
ASSETS
Cash and cash equivalents	$ 8,192	$ 5,761
Short-term investment securities	22,562	30,582
Accounts receivable, net of allowances of $64 and $113 at December 31, 2021 and December 31, 2020, respectively	18,905	16,601
Inventories, net	13,691	9,984
Prepaid expenses and other assets	1,747	1,685
Total current assets	65,097	64,613
Property and equipment, net	11,949	12,505
Long-term investment securities	0	4,640
Goodwill	6,334	3,332
Intangible assets, net	1,579	0
Other noncurrent assets	2,438	2,441
TOTAL ASSETS	87,397	87,531
LIABILITIES AND STOCKHOLDERS’ EQUITY
Accounts payable	5,360	4,430
Accrued liabilities	11,117	7,316
Total current liabilities	16,477	11,746
Long-term liabilities	3,999	4,387
Total liabilities	20,476	16,133
Stockholders’ equity:
Common stock, $0.001 par value, 50,000,000 shares authorized at December 31, 2021 and December 31, 2020, respectively, and 18,238,030 and 18,429,350 shares issued and outstanding at December 31, 2021 and December 31, 2020, respectively	18	18
Additional paid-in capital	123,998	128,250
Accumulated deficit	(56,735)	(56,888)
Accumulated other comprehensive (loss) income	(360)	18
Total stockholders’ equity	66,921	71,398
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY	$ 87,397	$ 87,531