Condensed Consolidated Balance Sheets (Current Period Unaudited) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
CURRENT ASSETS
Cash	$ 1,156	$ 1,029
Accounts receivable, less allowance of $33 and $40 for doubtful accounts	923	940
Prepaid expenses and other assets	153	159
Assets held for sale	212	212
Total current assets	2,444	2,340
PROPERTY	65,664	65,650
Accumulated depreciation	(35,856)	(34,971)
Net property	29,808	30,679
OTHER ASSETS
Deferred development costs	10,623	10,395
Other noncurrent assets	1,316	1,387
Total other assets	11,939	11,782
TOTAL ASSETS	44,191	44,801
CURRENT LIABILITIES
Accounts payable	718	696
Payroll and employee benefits	518	784
Current portion of accrued retirement benefits	169	164
Deferred revenue	359	24
Other current liabilities	315	179
Total current liabilities	2,079	1,847
LONG-TERM LIABILITIES
Long-term debt	1,235	1,235
Accrued retirement benefits	7,685	7,867
Deposits	2,448	2,449
Deferred revenue	64	215
Other noncurrent liabilities	54	44
Total long-term liabilities	11,486	11,810
COMMITMENTS AND CONTINGENCIES (Note 11)
STOCKHOLDERS' EQUITY
Common stock--no par value, 43,000,000 shares authorized, 19,102,775 and 19,040,273 shares issued and outstanding	79,230	78,584
Additional paid in capital	9,246	9,246
Accumulated deficit	(37,966)	(36,432)
Accumulated other comprehensive loss	(19,884)	(20,254)
Total stockholders' equity	30,626	31,144
TOTAL LIABILITIES & STOCKHOLDERS' EQUITY	$ 44,191	$ 44,801