Related Party Transactions	12 Months Ended
Related Party Transactions	Dec. 31, 2015
Related Party Transactions [Abstract]
Related Party Transactions	Related Party Transactions Sales to NISCO, a 40%-owned joint venture accounted for as an investment under the equity method, totaled $35,843, $33,195 and $47,175 for the years ended December 31, 2015, 2014 and 2013, respectively. In March 2015, the Company received from NISCO a dividend of $680, all of which was related to earnings. In March 2014, the Company received from NISCO a dividend of $1,760, consisting of $809 related to earnings and a $951 return of capital. In March 2013, the Company received from NISCO a dividend of $4,000, consisting of $1,880 relating to earnings and a $2,120 return of capital. Sales to Shenya Sealing (Guangzhou) Company Limited (“Guangzhou”), a 51%-owned joint venture accounted for as an investment under the equity method, totaled $4,261 for the year ended December 31, 2015. There were no sales to Guangzhou for the year ended December 31, 2014.

The entire disclosure for related party transactions. Examples of related party transactions include transactions between (a) a parent company and its subsidiary; (b) subsidiaries of a common parent; (c) and entity and its principal owners; and (d) affiliates.