Financial Instruments (Tables)

12 Months Ended

Dec. 31, 2015

Financial Instruments [Abstract]

Schedule of Long-Term Debt

(in thousands, except interest rates)	2015		2014
Private placement with a fixed interest rate of 6.84%, due 2017		$50,000		$100,000
Revolving credit agreements with borrowings outstanding at an end of period interest rate of 2.27% in 2015 and 2.69% in 2014 (including the effect of interest rate hedging transactions, as described below), due in 2020		215,000		172,000
Various notes and mortgages, at an average end of period rate of 5.50% in both 2015 and 2014, due in varying amounts through 2021		96		111
Long-term debt		265,096		272,111
Less: current portion		(16)		(50,015)
Long-term debt, net of current portion		$265,080		$222,096