OTHER EXPENSES - Additional Information (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011
Other Expenses [Line Items]
Nonoperating Income (Expense)	$ (3,233)	$ (1,729)
Interest expense	1,753	1,185
Accretion of debt discount	1,628	1,134
Derivative losses	(726)	(544)
Loss on disposal of property and equipment	(18)	0
Loss on settlement	(282)	0
Debt modification expense	432	0
Other non operating income	$ (22)	$ 0