Borrowing Facilities (Details) THB in Millions, $ in Millions	9 Months Ended
	Sep. 30, 2015 USD ($)	Sep. 30, 2015 THB	Sep. 30, 2015 USD ($)	Dec. 31, 2014 USD ($)
U.S. Credit Agreement [Member]
Line of Credit Facility [Line Items]
Revolving credit facility			$ 200.0
Revolving credit facility, term period	5 years
U.S. revolving credit facility, maturity date	Jul. 30, 2017
Possible increase to the borrowing capacity of U.S. credit agreement	$ 100.0
Letters of credit outstanding amount			1.6	$ 1.2
U.S. Credit facility, available for future borrowings			$ 198.4	$ 198.8
U.S. Credit agreement, secured by percentage of stock of the Company's domestic subsidiaries	100.00%
U.S. Credit agreement, secured by percentage of voting capital stock of each direct foreign subsidiary	65.00%
Thailand Subsidiary [Member]
Line of Credit Facility [Line Items]
Revolving credit facility | THB		THB 350
Minimum [Member] | U.S. Credit Agreement [Member]
Line of Credit Facility [Line Items]
U.S. Credit facility, commitment fee	0.30%
Maximum [Member] | U.S. Credit Agreement [Member]
Line of Credit Facility [Line Items]
U.S. Credit facility, commitment fee	0.40%
LIBOR Plus [Member] | Minimum [Member] | U.S. Credit Agreement [Member]
Line of Credit Facility [Line Items]
Basis spread on variable rate	1.75%
LIBOR Plus [Member] | Maximum [Member] | U.S. Credit Agreement [Member]
Line of Credit Facility [Line Items]
Basis spread on variable rate	2.75%
Prime Rate Plus [Member] | Minimum [Member] | U.S. Credit Agreement [Member]
Line of Credit Facility [Line Items]
Basis spread on variable rate	0.75%
Prime Rate Plus [Member] | Maximum [Member] | U.S. Credit Agreement [Member]
Line of Credit Facility [Line Items]
Basis spread on variable rate	1.75%