Income Per Common Share (Computation Of Basic And Diluted Income Per Common Share) (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands		3 Months Ended		6 Months Ended
		Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Net income		$ 3,163	$ 2,347	$ 5,386	$ 4,888
Net income allocated to participating securities		(62)	(46)	(106)	(92)
Net income allocated to common shareholders		$ 3,101	$ 2,301	$ 5,280	$ 4,796
Basic weighted-average common shares outstanding		32,664	32,010	32,552	31,519
Basic income per common share		$ 0.09	$ 0.07	$ 0.16	$ 0.15
Net income allocated to participating securities, diluted		$ (60)	$ (45)	$ (103)	$ (90)
Net income allocated to common shareholders, diluted		$ 3,103	$ 2,302	$ 5,283	$ 4,798
Effect of dilutive stock options and awards	[1]	1,150	754	1,187	751
Diluted weighted-average common shares outstanding		33,814	32,764	33,739	32,270
Diluted income per common share		$ 0.09	$ 0.07	$ 0.16	$ 0.15
Stock Options [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of earnings per share		264	631	190	572

[1] We excluded stock options from the calculation of diluted weighted-average common shares outstanding if the per share value, including the sum of (i) the exercise price of the options and (ii) the amount of the compensation cost attributed to future services and not yet recognized, was greater than the average market price of the shares because the inclusion of these stock options would be antidilutive to income per common share. Accordingly, stock options to purchase a weighted-average 264,000 and 190,000 shares for the three and six months ended June 30, 2017, respectively, and 631,000 and 572,000 shares for the three and six months ended June 30, 2016, respectively, were excluded from the calculation of diluted weighted-average common shares outstanding.