Segment Reporting (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Net sales and operating income by segment [Abstract]
Net sales	$ 163,428	$ 184,007	$ 532,467	$ 532,366
Income (loss) from operations	7,498	10,044	31,010	28,917
Wheels [Member]
Net sales and operating income by segment [Abstract]
Net sales	101,833	106,685	324,525	300,058
Income (loss) from operations	13,715	11,847	44,372	33,446
Gunite [Member]
Net sales and operating income by segment [Abstract]
Net sales	43,823	42,357	128,569	134,634
Income (loss) from operations	5,061	4,149	15,140	14,670
Brillion Iron Works [Member]
Net sales and operating income by segment [Abstract]
Net sales	17,772	34,965	79,373	97,674
Income (loss) from operations	(3,650)	1,680	(2,924)	3,444
Corporate / Other [Member]
Net sales and operating income by segment [Abstract]
Income (loss) from operations	(7,628)	(7,632)	(25,578)	(22,643)
Inter-segment sales [Member]
Net sales and operating income by segment [Abstract]
Net sales	$ 1,041	$ 3,055	$ 4,949	$ 10,825