CONSOLIDATED STATEMENT OF INCOME (Parentheticals) - $ / shares			1 Months Ended	12 Months Ended
	Jan. 13, 2017	Jan. 15, 2016	Dec. 31, 2014	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Income Statement [Abstract]
Cash dividend	$ 0.095	$ 0.095	$ 0.039	$ 0.380	$ 0.380	$ 0.324