Financial Instruments (Tables)

3 Months Ended

Mar. 31, 2013

Financial Instruments [Abstract]

Schedule of Long-Term Debt

Long-term debt consists of:

(in thousands, except interest rates)	March 31, 2013		December 31, 2012
Convertible notes, par value $28,437, issued in March 2006 with fixed contractual interest rates of 2.25%, due in 2026, redeemed March 2013	$ -		$28,261
Private placement with a fixed interest rate of 6.84%, due in 2013 through 2017	150,000		150,000
Credit agreement with borrowings outstanding at an end of period interest rate of 2.68% in 2013 and 3.92% in 2012, due in 2018	176,000		132,000
Various notes and mortgages relative to operations principally outside the United States, at an average end of period rate of 3.06% in 2013 and 2012, due in varying amounts through 2021	7,636		8,892
Long-term debt	333,636		319,153
Less: current portion	(55,014	)	(83,276	)
Long-term debt, net of current portion	$278,622		$235,877