Consolidated Statements of Stockholders' Equity Parentheticals - $ / shares	9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016
Shares of common stock issued	140,284	165,934
Stock Repurchased During Period, Shares	0	(684,442)
Stock Issued During Period, Shares, Share-based Compensation, Gross	0	591,234
Stock Issued During Period, Shares, Share-based Compensation, Forfeited	(90,848)	(326,834)
Shares of stock withheld for employee taxes	(62,087)	(63,235)
Common Stock, Dividends, Per Share, Cash Paid	$ 0.33	$ 0.30