Segment Information Segment Description (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Diversified industrial
Segment Reporting Information [Line Items]
Management Fees Revenue	$ 2,500	$ 2,200	$ 4,750	$ 4,400
Energy
Segment Reporting Information [Line Items]
Management Fees Revenue	2,000	2,000	4,000	4,000
Financial services
Segment Reporting Information [Line Items]
Management Fees Revenue	$ 560	$ 62	$ 1,100	$ 125