Consolidated Statements of Operations - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Revenue
Diversified industrial net sales	$ 193,271	$ 168,546	$ 331,253	$ 304,033
Energy net sales	35,610	51,924	74,495	97,083
Financial services revenue	15,484	8,023	27,660	14,989
Investment and other income	104	141	504	546
Net investment gains (losses)	7,185	(631)	32,323	(791)
Total revenue	251,654	228,003	466,235	415,860
Costs and expenses
Cost of goods sold	168,339	157,753	300,033	291,084
Selling, general and administrative expenses	50,863	46,558	110,774	95,614
Impairment charges	22,740	0	28,338	0
Finance interest expense	325	191	589	362
(Recovery of) Provision for loan losses	(32)	(64)	30	(154)
Interest expense, net	2,139	2,522	4,173	4,963
Realized and unrealized (gain) loss on derivatives	(312)	606	(105)	466
Other income, net	(6,607)	(1,921)	(9,062)	(6,350)
Total costs and expenses	237,455	205,645	434,770	385,985
Income from continuing operations before income taxes and equity method income (loss)	14,199	22,358	31,465	29,875
Income tax provision	3,660	7,743	11,580	8,911
Income (Loss) from equity method investments and investments held at fair value:
(Loss) Income of associated companies, net of taxes	(820)	2,275	3,829	(15,983)
(Loss) Income from other investments - related party	(38)	1,475	361	1,473
(Loss) Income from investments held at fair value	(527)	(792)	3,886	(3,238)
Net income from continuing operations	9,154	17,573	27,961	3,216
Discontinued operations:
Income from discontinued operations, net of taxes	0	3,624	565	6,393
(Loss) Gain on sale of discontinued operations, net of taxes	(148)	0	86,258	42
Net (loss) income from discontinued operations	(148)	3,624	86,823	6,435
Net income	9,006	21,197	114,784	9,651
Net loss (income) attributable to noncontrolling interests in consolidated entities:
Continuing operations	1,520	(9,825)	5,104	(9,755)
Discontinued operations	53	(1,577)	(30,878)	(2,807)
Net income (loss) attributable to noncontrolling interests in consolidated entities	1,573	(11,402)	(25,774)	(12,562)
Net income (loss) attributable to common unitholders	$ 10,579	$ 9,795	$ 89,010	$ (2,911)
Net income (loss) per common unit - basic (in dollars per share)
Net income (loss) from continuing operations (in dollars per share)	$ 0.39	$ 0.27	$ 1.20	$ (0.22)
Net income from discontinued operations (in dollars per share)	0.00	0.07	2.02	0.12
Net income (loss) attributable to common unitholders (in dollars per share)	0.39	0.34	3.22	(0.10)
Net income (loss) per common unit - diluted (in dollars per share)
Net income (loss) from continuing operations (in dollars per share)	0.38	0.27	1.19	(0.22)
Net income from discontinued operations (in dollars per share)	0.00	0.07	2.01	0.12
Net income (loss) attributable to common unitholders (in dollars per share)	$ 0.38	$ 0.34	$ 3.20	$ (0.10)
Weighted average number of common units outstanding - basic (in shares)	27,640,332	28,739,858	27,649,363	29,765,843
Weighted average number of common units outstanding - diluted (in shares)	27,726,222	28,775,440	27,899,699	29,765,843