CONSOLIDATED BALANCE SHEETS (USD $) In Thousands, unless otherwise specified	Dec. 31, 2011	Dec. 31, 2010
CURRENT ASSETS:
Cash and cash equivalents	$ 27,001	$ 35,900
Accounts receivable:
Trade	1,374	7,013
Other	3,837	2,231
Inventories	279	1,189
Total current assets	32,491	46,333
FUNDS IN RESPECT OF EMPLOYEE RIGHTS UPON RETIREMENT	1,043	942
PROPERTY AND EQUIPMENT, NET	18,271	17,454
Total assets	51,805	64,729
Accounts payable and accruals:
Trade	5,032	6,272
Other	7,540	8,068
Deferred revenues	6,121	4,563
Total current liabilities	18,693	18,903
LONG TERM LIABILITIES:
Deferred revenues	50,923	55,486
Long term liability	6,566
Liability for employee rights upon retirement	1,700	1,663
Total long term liabilities	59,189	57,149
Total liabilities	77,882	76,052
COMMITMENTS
CAPITAL DEFICIENCY:
Common Stock, $0.001 par value: Authorized - as of December 31, 2010 and 2011, 150,000,000 shares; issued and outstanding - as of December 31, 2010 and 2011, 81,248,472 and 85,630,157 shares, respectively	86	81
Additional paid-in capital	145,814	124,044
Accumulated deficit	(171,977)	(135,448)
Total capital deficiency	(26,077)	(11,323)
Total liabilities net of capital deficiency	$ 51,805	$ 64,729