Goodwill and Intangible Assets (Details 1) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Indefinite-lived Intangible Assets [Line Items]
Begnning Balance, Gross Carrying Amount	$ 14,302	$ 14,302	$ 12,837
Intangible assets acquired, Gross Carrying Amount			1,465
Amortization of intangible assets, Gross Carrying Amount	0	0	0
Ending Balance, Gross Carrying Amount	14,302	14,302	14,302
Beginning Balance, Accumulated Amortization	(9,564)	(8,151)	(6,709)
Intangible assets acquired, Accumulated Amortization			0
Amortization of intangible assets, Accumulated Amortization	(1,241)	(1,413)	(1,442)
Ending Balance, Accumulated Amortization	(10,805)	(9,564)	(8,151)
Beginning Balance, Net Value	4,738	6,151	6,128
Intangible assets acquired, Net Value			1,465
Amortization of Intangible Assets	(1,241)	(1,413)	(1,442)
Ending Balance, Net Value	$ 3,497	$ 4,738	$ 6,151