SIGNIFICANT ACCOUNTING POLICIES (Details) (USD $)	3 Months Ended
	Mar. 31, 2012 M	Mar. 31, 2011
Revision of Previously Reported Statement of Cash Flow Information
Net cash used in operating activities	$ 1,292,000	$ (12,311,000)
Net cash (used in) provided by financing activities	(1,102,000)	6,044,000
Cash and Cash Equivalents
Maximum maturities of highly liquid investments to be considered as cash equivalents (in months)	3
Restricted Cash
Restricted cash to eliminate letters of credit obligations	3,100,000
Misclassification within consolidated statements of cash flows
Revision of Previously Reported Statement of Cash Flow Information
Net cash used in operating activities		(12,311,000)
Net cash (used in) provided by financing activities		6,044,000
Misclassification within consolidated statements of cash flows | As Previously Reported
Revision of Previously Reported Statement of Cash Flow Information
Net cash used in operating activities		(11,495,000)
Net cash (used in) provided by financing activities		5,228,000
Misclassification within consolidated statements of cash flows | Adjustment
Revision of Previously Reported Statement of Cash Flow Information
Net cash used in operating activities		(816,000)
Net cash (used in) provided by financing activities		$ 816,000