Consolidated Statement of Stockholders' Equity (Unaudited) (Parentheticals)	9 Months Ended
	Sep. 30, 2017 $ / shares shares
Statement of Stockholders' Equity [Abstract]
Shares repurchased (in shares)	701,899
Shares issued for stock-based awards (in shares)	131,777
Dividends on common stock, per share (in dollars per share) | $ / shares	$ 0.81