Partially-Owned Leasing Subsidiaries (Details Textual) - Railcar Leasing and Management Services Group - Partially-owned subsidiaries $ in Millions	6 Months Ended
	Jun. 30, 2016 USD ($) board_member subsidiary
Noncontrolling Interest [Line Items]
Number of subsidiaries | subsidiary	2
Number of board members	7
Number of TILC designated board members	2
Carrying value of investment in partially-owned subsidiaries | $	$ 224.1
Weighted average ownership	39.00%
Weighted average ownership interest by institutional investors	61.00%