Financial Instruments (Tables)

9 Months Ended

Sep. 30, 2015

Financial Instruments [Abstract]

Schedule of Long-Term Debt

(in thousands, except interest rates)	September 30, 2015			December 31, 2014
Private placement with a fixed interest rate of 6.84%, due 2015 and 2017	$	100,000		$	100,000
Credit agreement with borrowings outstanding at an end of period interest rate of 2.36% in 2015 and 2.69% in 2014 (including the effect of interest rate hedging transactions, as described below), due in 2020		170,000			172,000
Various notes and mortgages relative to operations principally outside the United States, at an average end of period rate of 5.5% in 2015 and 2014, due in varying amounts through 2021		100			111
Long-term debt		270,100			272,111
Less: current portion		(50,016	)		(50,015	)
Long-term debt, net of current portion	$	220,084		$	222,096