CORPORATE OFFICE RELOCATION (Details) (USD $)	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011
Summary of relocation expenses incurred and to be paid in future periods
Balance at the beginning of the period	$ 3,311,000	$ 7,101,000
Expenses incurred		1,185,000
Amounts paid	(1,177,000)	(4,975,000)
Balance at the end of the period	2,134,000	3,311,000
Employee Separation
Summary of relocation expenses incurred and to be paid in future periods
Balance at the beginning of the period	226,000	1,895,000
Expenses incurred		(158,000)
Amounts paid	(134,000)	(1,511,000)
Balance at the end of the period	92,000	226,000
Anticipated additional costs on completion of final employee moves		1,200,000
Other Relocation
Summary of relocation expenses incurred and to be paid in future periods
Expenses incurred		1,211,000
Amounts paid		(1,211,000)
Lease Termination
Summary of relocation expenses incurred and to be paid in future periods
Balance at the beginning of the period	3,085,000	5,206,000
Expenses incurred		132,000
Amounts paid	(1,043,000)	(2,253,000)
Balance at the end of the period	$ 2,042,000	$ 3,085,000