Acquisitions (Details 2) - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2018	Dec. 31, 2017
Business Combinations [Abstract]
Opening balance		$ 3,861
Purchasing of investment properties and investment in other company			5,118
Purchase of investment property	[1]	326
Depreciation of investment properties		(5)
Non-controlling interest			182
Impairment of investment properties		(326)
Impairment of investment in other company		(1,455)	(1,439)
Closing balance		$ 2,080	$ 3,861

[1] See also Ohio Medical Office building below.