Segment Reporting (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Net sales and operating income by segment [Abstract]
Net sales	$ 181,575	$ 179,941	$ 348,359	$ 342,928
Operating income (loss)	12,304	5,959	18,873	1,162
Wheels [Member]
Net sales and operating income by segment [Abstract]
Net sales	101,155	99,468	193,373	192,630
Operating income (loss)	11,857	11,751	21,599	17,494
Gunite [Member]
Net sales and operating income by segment [Abstract]
Net sales	48,304	51,207	92,277	90,603
Operating income (loss)	7,243	3,323	10,521	1,546
Brillion Iron Works [Member]
Net sales and operating income by segment [Abstract]
Net sales	32,116	29,266	62,709	59,695
Operating income (loss)	489	1,855	1,764	2,430
Corporate / Other [Member]
Net sales and operating income by segment [Abstract]
Operating income (loss)	(7,285)	(10,970)	(15,011)	(20,308)
Inter-segment sales [Member]
Net sales and operating income by segment [Abstract]
Net sales	$ 3,929	$ 6,187	$ 7,770	$ 8,635