Schedule of Accrued Liabilities (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Accrued Liabilities [Abstract]
Accrued payroll and benefits	$ 638	$ 814
Pension obligation (see note 16)	453	337
Advance payments from customers, current portion	314	691
Warranty reserve	548	379
Foreign currency exposure provision	315	358
Accrued taxes (other than income taxes)	513	439
Other accrued expenses	978	533
Total accrued expenses	$ 3,759	$ 3,551