Consolidated Statements of Equity (Unaudited) (Parentheticals) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016
Retained Earnings [Member]
Cash dividend declared, per share (in dollars per share)	$ 0.33	$ 0.45
Loss in respect of derivative instruments designated for cash flow hedge, related tax	$ 38
Change in unrealized gains or losses in respect of the Company's share in derivative instruments of unconsolidated investment, tax	0	$ 0
Amortization of unrealized gains, tax	$ 35	$ 44
Cash dividend declared, per share (in dollars per share)	$ 0.33	$ 0.45
Loss in respect of derivative instruments designated for cash flow hedge, related tax		$ 40