Derivatives and Hedging Activities (Details) (Interest Rate Swap [Member], USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012
Interest Rate Swap [Member]
Interest rate swap agreement [Abstract]
Notional amount of cash flow hedge instruments	$ 60,000
Maturity date	Sep. 28, 2015
Interest rate swap, fixed rate (in hundredths)	0.92%
Fair value of swap	(616)	(930)
Interest rate cash flow hedge gain (loss) to be reclassified during next 12 months, net	$ (420)