SEGMENT INFORMATION Information (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Segment Reporting Information [Line Items]
Revenue:	$ 258,700	$ 210,311	$ 727,866	$ 612,255
Income (Loss) from continuing operations before income taxes:	32,222	(4,479)	54,230	15,124
Income tax provision	11,432	7,363	23,831	16,073
Net income (loss) from continuing operations	20,790	(11,842)	30,399	(949)
Total	13,268	(14,554)	(1,242)	(11,699)
Diversified industrial
Segment Reporting Information [Line Items]
Revenue:	188,701	171,874	546,040	502,915
Income (Loss) from continuing operations before income taxes:	40,762	10,782	75,632	50,301
Total	20,226	(4,006)	25,630	11,197
Energy
Segment Reporting Information [Line Items]
Revenue:	58,583	31,418	155,666	86,531
Income (Loss) from continuing operations before income taxes:	1,497	3,895	14,073	9,936
Total	(4,843)	(137)	(3,402)	(217)
Financial services
Segment Reporting Information [Line Items]
Revenue:	9,309	7,162	24,298	20,742
Income (Loss) from continuing operations before income taxes:	6,016	4,731	15,266	13,167
Corporate and other
Segment Reporting Information [Line Items]
Revenue:	2,107	(143)	1,862	2,067
Income (Loss) from continuing operations before income taxes:	(16,053)	(23,887)	(50,741)	(58,280)
Total	$ (2,115)	$ (10,411)	$ (23,470)	$ (22,679)