Shareholders' Equity (Tables)

12 Months Ended

Dec. 31, 2017

Shareholders' Equity [Abstract]

Schedule Of Stock Repurchase Activity

			Shares Repurchased
Plan Date	Authorized	Expiration	2017	2016
4/18/2016	$350,000 in shares per calendar quarter	3/31/2017	-	34,048
10/12/2017	100,000 shares	9/30/2018	-	N/A