Financial Instruments (Tables)

3 Months Ended

Mar. 31, 2016

Long-term Debt and Capital Lease Obligations [Abstract]

Schedule of Long-Term Debt

Long-term debt, principally to banks and bondholders, consists of:

(in thousands, except interest rates)	March 31, 2016		December 31, 2015
Private placement with a fixed interest rate of 6.84%, due 2017	$50,000		$50,000
Credit agreement with borrowings outstanding at an end of period interest rate of 2.34% in 2016 and 2.27% in 2015 (including the effect of interest rate hedging transactions, as described below)	205,000		215,000
Various notes and mortgages relative to operations principally outside the United States, at an average end of period rate of 5.5% in 2016 and 2015, due in varying amounts through 2021	92		96
Long-term debt	255,092		265,096
Less: current portion	(16	)	(16	)
Long-term debt, net of current portion	$255,076		$265,080