Derivative Instruments (Narrative) (Details)	1 Months Ended	9 Months Ended		9 Months Ended	12 Months Ended
	Jul. 31, 2013 USD ($)	Sep. 30, 2013 USD ($)	Sep. 30, 2013 JPY (¥)	Sep. 30, 2013 Other Comprehensive Income (Loss) [Member] USD ($)	Dec. 31, 2012 Other Comprehensive Income (Loss) [Member] USD ($)	May 31, 2012 Foreign Exchange Contract 3 [Member] USD ($)	May 31, 2012 Foreign Exchange Contract 3 [Member] MXN	Aug. 31, 2013 Foreign Exchange Contract 4 [Member] USD ($)	Aug. 31, 2013 Foreign Exchange Contract 4 [Member] MXN	Dec. 31, 2012 Foreign Exchange Contract 5 [Member] USD ($)	Dec. 31, 2012 Foreign Exchange Contract 5 [Member] JPY (¥)	Dec. 31, 2012 Foreign Exchange Contract 6 [Member] USD ($)	Dec. 31, 2012 Foreign Exchange Contract 6 [Member] JPY (¥)	Jan. 31, 2013 Foreign Exchange Contract 7 [Member] USD ($)	Jan. 31, 2013 Foreign Exchange Contract 7 [Member] IDR	Jan. 31, 2013 Minimum [Member] Foreign Exchange Contract 7 [Member] USD ($)	Jan. 31, 2013 Maximum [Member] Foreign Exchange Contract 7 [Member] USD ($)
Derivative Instruments, Gain (Loss) [Line Items]
Maximum potential future exposure on derivatives		$ 4,500,000
Derivative posted as collateral		342,000
Unrealized loss related to derivative instruments included in accumulated other comprehensive loss				5,100,000	7,400,000
Settlement amount	757,000
Loss recognized in income from ineffective portion		486,000
Notional amount of forward purchase contracts						700,000		1,200,000		1,500,000		1,500,000		3,300,000
Exchange rate			98.24				14.5700		13.6103		85.27		85.16		9,910
Projected Peso exposure represented by Mexican Peso foreign exchange contracts (in hundredths)						50.00%	50.00%
Projected yen exposure represented by Japanese Yen foreign exchange contract (in hundredths)										3.76%	3.76%
Projected Rupiah exposure represented by Indonesian Rupiah foreign exchange contract (in hundredths)														80.00%	80.00%
Estimated monthly exposure						$ 200,000										$ 350,000	$ 375,000