VARIABLE INTERESTS (Details 2) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2013 item	Dec. 31, 2012	Mar. 31, 2012
VARIABLE INTERESTS
Number of wholly-owned unconsolidated subsidiaries	3
Comparison of the liability balance and the maximum exposure to loss related to trusts
Notes payable to trusts	$ 119,590	$ 119,590
Number of consolidated VIEs	0		0
The Trusts
Comparison of the liability balance and the maximum exposure to loss related to trusts
Notes payable to trusts	119,590
Investment balance	3,590
Maximum exposure to loss	116,000
Trust
Comparison of the liability balance and the maximum exposure to loss related to trusts
Notes payable to trusts	36,083
Investment balance	1,083
Maximum exposure to loss	35,000
Trust II
Comparison of the liability balance and the maximum exposure to loss related to trusts
Notes payable to trusts	42,269
Investment balance	1,269
Maximum exposure to loss	41,000
Trust III
Comparison of the liability balance and the maximum exposure to loss related to trusts
Notes payable to trusts	41,238
Investment balance	1,238
Maximum exposure to loss	$ 40,000