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Business Combinations (Schedule Of Assets Purchased And Liabilities Assumed) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended	0 Months Ended
	Dec. 31, 2014	Aug. 01, 2014	Dec. 31, 2013	Dec. 31, 2012
Significant Acquisitions and Disposals [Line Items]
Common stock issued for acquisition	$ 5,400
Goodwill	61,153us-gaap_Goodwill		48,536us-gaap_Goodwill	48,536us-gaap_Goodwill
Scott Danahy Naylon Co., Inc. [Member]
Significant Acquisitions and Disposals [Line Items]
Cash		8,100
Common stock issued for acquisition		5,400
Contingent consideration		3,227
Fair value of total consideration transferred		16,727
Cash		105
Identified intangible assets		6,640
Premises and equipment, accounts receivable and other assets		1,094
Total identifiable assets acquired		7,839
Deferred tax liability		2,556
Other liabilities		1,173
Total liabilities assumed		3,729
Fair value of net assets acquired		4,110
Goodwill resulting from acquisition		$ 12,617