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Condensed Consolidated Balance Sheets (Current Period Unaudited) - USD ($)
$ in Thousands
Jun. 30, 2024
Dec. 31, 2023
CURRENT ASSETS    
Cash and cash equivalents $ 3,733 $ 5,700
Accounts receivable, net 1,337 1,166
Investments, current portion 2,949 2,671
Prepaid expenses and other assets 644 467
Total current assets 8,663 10,004
PROPERTY & EQUIPMENT, NET 16,319 16,059
OTHER ASSETS    
Investments, net of current portion 278 464
Investment in joint venture 1,627 1,608
Deferred development costs 13,363 12,815
Other noncurrent assets 1,686 1,273
Total other assets 16,954 16,160
TOTAL ASSETS 41,936 42,223
CURRENT LIABILITIES    
Accounts payable 1,310 1,154
Payroll and employee benefits 431 502
Accrued retirement benefits, current portion 142 142
Deferred revenue, current portion 513 217
Other current liabilities 517 465
Total current liabilities 2,913 2,480
LONG-TERM LIABILITIES    
Accrued retirement benefits, net of current portion 1,506 1,550
Other noncurrent liabilities 30 14
Total long-term liabilities 4,804 5,039
TOTAL LIABILITIES 7,717 7,519
COMMITMENTS AND CONTINGENCIES
STOCKHOLDERS' EQUITY    
Preferred stock--$0.0001 par value; 5,000,000 shares authorized; no shares issued and outstanding 0 0
Common stock--$0.0001 par value; 43,000,000 shares authorized; 19,650,489 and 19,615,350 shares issued and outstanding at June 30, 2024 and December 31, 2023, respectively 85,369 84,680
Additional paid-in-capital 12,475 10,538
Accumulated deficit (56,864) (53,617)
Accumulated other comprehensive loss (6,761) (6,897)
Total stockholders' equity 34,219 34,704
TOTAL LIABILITIES & STOCKHOLDERS' EQUITY 41,936 42,223
Excluding Deposits [Member]    
LONG-TERM LIABILITIES    
Deferred revenue, net of current portion 1,300 1,367
Member Deposits [Member]    
LONG-TERM LIABILITIES    
Deferred revenue, net of current portion $ 1,968 $ 2,108