Disclosure about Fair Value of Financial Instruments (Details 1) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2013		Dec. 31, 2012
The Market approach utilized to measure fair value of financial assets and liabilities on recurring basis
Available-for-sale equity investments	$ 1,555	[1]	$ 1,384
Interest rate swap agreements	(200)	[2]
Foreign currency forward contract	63,249	[2]
Totals	64,604
Level 1 [Member]
The Market approach utilized to measure fair value of financial assets and liabilities on recurring basis
Available-for-sale equity investments	1,555	[1]
Interest rate swap agreements	0	[2]
Foreign currency forward contract	0	[2]
Totals	1,555
Level 2 [Member]
The Market approach utilized to measure fair value of financial assets and liabilities on recurring basis
Available-for-sale equity investments	0	[1]
Interest rate swap agreements	(200)	[2]
Foreign currency forward contract	63,249	[2]
Totals	63,049
Level 3 [Member]
The Market approach utilized to measure fair value of financial assets and liabilities on recurring basis
Available-for-sale equity investments	0	[1]
Interest rate swap agreements	0	[2]
Foreign currency forward contract	0	[2]
Totals	$ 0

[1] (1) Unrealized gains or losses on equity investments are recorded in accumulated other comprehensive income (loss) at each measurement date.

[2] (2) Please see Note 11 for additional information.