Goodwill and Other Intangibles (Schedule of Goodwill) (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Goodwill [Roll Forward]
Carrying value, beginning balance	$ 37,279	$ 37,279
Carrying value, ending balance	37,279
CAM [Member]
Goodwill [Roll Forward]
Carrying value, beginning balance	34,395	34,395
Carrying value, ending balance	34,395
Pemco [Member]
Goodwill [Roll Forward]
Carrying value, beginning balance	2,884	$ 2,884
Carrying value, ending balance	$ 2,884