Derivatives (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012
2013 Swap
Derivative [Line Items]
Beginning of Term	Mar. 13, 2013	Mar. 13, 2013
End of Term	Mar. 13, 2014	Mar. 13, 2014
Weighted-Average Notional Amount Over Remaining Term	$ 40,000	$ 51,000
Fixed Rate	2.181%	2.181%
2012 Swap
Derivative [Line Items]
Beginning of Term		Mar. 13, 2012
End of Term		Mar. 13, 2013
Weighted-Average Notional Amount Over Remaining Term		$ 70,000
Fixed Rate		1.085%