VARIABLE INTEREST ENTITIES SUPPLEMENTAL CASH FLOW INFORMATION (Details) RSO (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2014
Non-cash financing activities include the following:
Dividends payable	$ 1,306		$ 1,312
Issuance of restricted stock	3,900	3,700
RSO [Member]
Class of Stock [Line Items]
Assumption of direct financing leases and other assets	48,605	0
Non-cash financing activities include the following:
Issuance of restricted stock	1,163	640
Contribution of equipment-backed securitized notes and other liabilities	33,377	0
RSO [Member] | Common Stock [Member]
Non-cash financing activities include the following:
Dividends payable	21,423	25,663
RSO [Member] | Redeemable Preferred Stock [Member]
Non-cash financing activities include the following:
Dividends payable	$ 6,116	$ 2,520