Joint Ventures (Additional Information) (Details) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015 USD ($) Entity	Sep. 30, 2014 USD ($)	Sep. 30, 2015 USD ($) Entity	Sep. 30, 2014 USD ($)
Schedule of Equity Method Investments [Line Items]
Number of joint ventures that are 50% owned (entity)	2		2
Equity income related to joint ventures | $	$ 877	$ 953	$ 2,187	$ 2,992
Rogers INOAC Corporation [Member]
Schedule of Equity Method Investments [Line Items]
Ownership interest in joint venture (percent)	50.00%		50.00%
Rogers INOAC Suzhou Corporation [Member]
Schedule of Equity Method Investments [Line Items]
Ownership interest in joint venture (percent)	50.00%		50.00%