Intangible Assets (Goodwill) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Unamortized intangible assets (goodwill) [Roll Forward]
Gross balance at beginning of year	$ 4,205	$ 4,205	$ 3,905
Accumulated impairment balance beginning of year		0	0	0
Effect of Granite merger	0	0	300
Impairment	0	0	0
Accumulated balance at end of year	$ 4,205	$ 4,205	$ 4,205