Financial Instruments and Concentrations of Credit Risk (Details)	12 Months Ended					12 Months Ended	22 Months Ended
	Dec. 31, 2013 USD ($) Contract	Dec. 31, 2012 USD ($)	Dec. 31, 2011 USD ($)	Dec. 31, 2013 Designated as Hedging Instrument [Member] USD ($)	Dec. 31, 2012 Designated as Hedging Instrument [Member] USD ($)	Dec. 31, 2013 Forward Contracts [Member] Designated as Hedging Instrument [Member] USD ($)	Oct. 31, 2013 Forward Contracts [Member] Designated as Hedging Instrument [Member] USD ($)	Dec. 31, 2013 Forward Contracts [Member] Designated as Hedging Instrument [Member] EUR (€)	Dec. 31, 2012 Forward Contracts [Member] Designated as Hedging Instrument [Member] USD ($)
Derivatives, Fair Value [Line Items]
Number of contracts held	2
Foreign exchange contracts to purchase foreign currencies				$ 500,000
Forward exchange contracts, maturity date				Jan. 31, 2013		Oct. 31, 2013
Fair value of derivative instruments, liability				100,000	100,000
Forward contract to sell foreign currency								30,000,000
After-tax gain in comprehensive income	514,000	(204,000)	529,000			500,000	2,400,000
Fair value of derivative instruments, asset									3,200,000
Bad debt expense	$ 586,000	$ 1,011,000	$ 878,000