Intangible Assets (Narrative) (Details) (USD $)	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Indefinite-lived Intangible Assets by Major Class [Line Items]
Unamortized identifiable customer intangible assets	$ 1,900,000	$ 2,100,000
Unamortized acquired unidentifibale intangible assets	202,000	353,000
Recorded amortization expense	351,000	351,000	351,000
Annual amortization, 2013	351,000
Annual amortization, 2014	251,000
Annual amortization, 2015	200,000
Annual amortization, 2016	200,000
Annual amortization, 2017	200,000
Remaining amortization period	9.5 years
Other Intangible Assets [Member]
Indefinite-lived Intangible Assets by Major Class [Line Items]
Recorded amortization expense	$ 351,000