Accrued Expenses and Other Current Liabilities (Tables)

12 Months Ended

Dec. 31, 2012

	December 31,
	2012	2011
Accrued salaries and benefits	$ 1,347	$ 1,486
Accrued severance and other charges	490	─
Sales tax payable	216	566
Accrued warranty	665	645
Deferred revenue	─	650
Liability for consigned precious metals	694	652
Warrant liability	10	100
Other	1,092	916
Accrued expenses and other current liabilities	$ 4,514	$ 5,015