Fair Value Measurements (Fair Value Assets(Liabilities) Measured On Recurring Basis) (Details) (USD $)	3 Months Ended				12 Months Ended
	Mar. 31, 2013		Mar. 31, 2012		Dec. 31, 2012
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Unrealized total gain/(losses) recorded in accumulated other comprehensive income	$ 900,000		$ (100,000)		$ 300,000
Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Interest rate contracts	0		0		0
Forward currency exchange contracts	(407,000)		(396,000)		(406,000)
Nonqualified savings plan assets	13,116,000	[1]	10,336,000	[1]	11,347,000	[1]
Marketable securities	7,028,000	[2]	5,565,000	[2]	6,042,000	[2]
Total	19,737,000		15,505,000		16,983,000
Level 1 [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Interest rate contracts	0		0		0
Forward currency exchange contracts	0		0		0
Nonqualified savings plan assets	13,116,000	[1]	10,336,000	[1]	11,347,000	[1]
Marketable securities	7,028,000	[2]	5,565,000	[2]	6,042,000	[2]
Total	20,144,000		15,901,000		17,389,000
Level 2 [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Interest rate contracts	0		0		0
Forward currency exchange contracts	(407,000)		(396,000)		(406,000)
Nonqualified savings plan assets	0	[1]	0	[1]	0	[1]
Marketable securities	0	[2]	0	[2]	0	[2]
Total	(407,000)		(396,000)		(406,000)
Level 3 [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Interest rate contracts	0		0		0
Forward currency exchange contracts	0		0		0
Nonqualified savings plan assets	0	[1]	0	[1]	0	[1]
Marketable securities	0	[2]	0	[2]	0	[2]
Total	$ 0		$ 0		$ 0

[1] (a)The nonqualified savings plan assets have an offsetting liability of equal amount, which is included in "Accounts payable and accrued expenses" in the Company's consolidated balance sheets.

[2] (b)Cumulative unrealized total gains/(losses), net of tax, on these equity securities of $0.9 million, ($0.1) million and $0.3 million as of March 31, 2013 and 2012, and December 31, 2012, respectively, are recorded in "Accumulated other comprehensive income (loss)" in the Company's consolidated statements of equity.