Consolidated Statements Of Stockholders' Equity (Parentheticals) - shares	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Statement of Stockholders' Equity [Abstract]
Purchase of common shares for Treasury	5,000	80,512
Common shares issued, net shares withheld for taxes	96,619	59,113	53,884