Accrued Expenses and Other Current Liabilities (Tables)

3 Months Ended

Mar. 31, 2013

Schedule of Accrued Expenses and Other Current Liabilities [Table Text Block]

	March 31, 2013	December 31, 2012
Accrued salaries and benefits	$ 1,283	$ 1,347
Accrued warranty	824	665
Liability for consigned precious metals	697	694
Accrued severance and other charges	277	490
Sales tax payable	214	216
Other	1,041	1,102
Accrued expenses and other current liabilities	$ 4,336	$ 4,514