CONSOLIDATED STATEMENTS OF COMPREHENSIVE LOSS - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2018	Dec. 31, 2017
Income Statement [Abstract]
Revenues:		$ 41
Rental expense		(5)
Net rental income		36
Operating expenses:
General and administrative		3,900	10,817
Impairment of investment properties (Note 4)		326
Impairment of investment in other company (Note 4)		1,455	1,439
Total operating expenses		5,681	12,256
Operating loss		(5,645)	(12,256)
Revaluation of asset contribution related financial instruments, net (Note 4)			(1,392)
Revaluation of Option to purchase redeemable convertible B preferred stock (Note 10)		3,288	(3,018)
Incremental value due to extinguishment of option to purchase redeemable convertible preferred stock (Note 10)		440
Interest and other financing income (expense), net		3	(267)
Loss from continuing operations		(1,914)	(16,933)
Discontinued operations:
Loss from discontinued operations (Note 2)		(172)	(2,459)
Net loss including portion attributable to non-controlling interest		(2,086)	(19,392)
Loss attributable to non-controlling interest		42	8
Net loss attributable to common stockholders and participating securities		(2,044)	(19,384)
Dividend on redeemable convertible preferred stock (Note 10)		(177)
Deemed dividend related to remediation agreement (Note 10)		(446)
Accretion of redeemable convertible preferred stock to redemption value (Note 10)	[1]	(2,001)
Net loss attributable to common stockholders and participating securities		$ (4,668)	$ (19,384)
Basic and diluted net loss per share:
Continuing operations (in dollars per share)		$ (0.26)	$ (3.07)
Discontinued operations (in dollars per share)		(0.01)	(0.45)
Earnings Per Share, Diluted (in dollars per share)		$ (0.27)	$ (3.52)
Shares used in computing basic and diluted net loss per share (in shares)		12,552,292	5,073,751
Other comprehensive income:
Reclassification of cumulative translation adjustment			$ 3,228
Foreign currency translation adjustments		7	189
Total other comprehensive income		7	3,417
Comprehensive loss		$ (2,037)	$ (15,967)

[1] Based on the rights and privileges of Series B Preferred Stock, since the Company did not obtain shareholder approval at March 31, 2018, the then outstanding Series B Preferred Stock became redeemable at the option of OFI. Consequently, in each reporting period commencing March 31, 2018, the outstanding Series B Preferred Stock is recorded at its maximum redemption value until occurrence of redemption or conversion. These shares were cancelled as a result of the entry into the Remediation Agreement on September 24, 2018 as described below (see also Note 10).