Consolidated Statements of Equity (Unaudited) (Parentheticals) - USD ($) $ in Thousands	9 Months Ended
Sep. 30, 2018	Sep. 30, 2017
Retained Earnings [Member]
Cash dividend declared, per share (in dollars per share)	$ 0.43	$ 0.33
Amortization of unrealized gains, tax	$ 18	$ 35
Loss in respect of derivative instruments designated for cash flow hedge, related tax	24
Change in unrealized gains or losses in respect of the Company's share in derivative instruments of unconsolidated investment, tax.	$ 0	$ 0

Aggregate dividends declared during the period for each share of common stock outstanding.

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