Condensed Consolidated Balance Sheets (Current Period Unaudited) - USD ($) $ in Thousands	Jun. 30, 2022	Dec. 31, 2021
CURRENT ASSETS
Cash	$ 16,949	$ 5,596
Restricted cash	273	0
Accounts receivable, net	1,093	1,103
Prepaid expenses and other assets	394	333
Assets held for sale	3,017	3,144
Total current assets	21,726	10,176
Property & equipment, net	16,437	16,998
OTHER ASSETS
Deferred development costs	9,566	9,564
Other noncurrent assets	1,184	1,181
Total other assets	10,750	10,745
TOTAL ASSETS	48,913	37,919
CURRENT LIABILITIES
Accounts payable	845	580
Payroll and employee benefits	671	949
Accrued retirement benefits, current portion	142	142
Deferred revenue, current portion	704	217
Other current liabilities	493	509
Total current liabilities	2,855	2,397
LONG-TERM LIABILITIES
Accrued retirement benefits, net of current portion	7,789	7,937
Other noncurrent liabilities	53	53
Total long-term liabilities	11,602	11,932
TOTAL LIABILITIES	14,457	14,329
COMMITMENTS AND CONTINGENCIES
STOCKHOLDERS' EQUITY
Common stock--no par value, 43,000,000 shares authorized, 19,443,623 and 19,383,288 shares issued and outstanding at June 30, 2022 and December 31, 2021, respectively	83,025	82,378
Additional paid-in-capital	9,184	9,184
Accumulated deficit	(42,417)	(52,324)
Accumulated other comprehensive loss	(15,336)	(15,648)
Total stockholders' equity	34,456	23,590
TOTAL LIABILITIES & STOCKHOLDERS' EQUITY	48,913	37,919
License [Member]
LONG-TERM LIABILITIES
Deferred revenue	1,567	1,633
Member Deposits [Member]
LONG-TERM LIABILITIES
Deferred revenue	$ 2,193	$ 2,309