Consolidated Statement of Changes in Stockholders' Equity (Parenthetical) (Parentheticals) - shares	9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015
Statement of Stockholders' Equity [Abstract]
Common shares issued from treasury stock for stock-based compensation (in shares)	2,750,695	2,843,506
Common shares repurchased (in shares)	0	25,841,608