Derivative Instruments and Hedging Activities (Details) (Variable interest rate swaps [Member], Designated as hedging instrument [Member], USD $) In Thousands, unless otherwise specified	9 Months Ended	12 Months Ended
	Sep. 30, 2014	Dec. 31, 2013
Variable interest rate swaps [Member] | Designated as hedging instrument [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Notional Amount:	$ 7,500	$ 7,500
Pay fixed rate:	2.72%	2.72%
Receive variable rate:	0.23%	0.24%
Maturity:	Sep. 30, 2017	Sep. 30, 2017
Unrealized fair value gain (loss)	$ (327)	$ (438)