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Income Taxes (Details 2) (USD $)
In Thousands, unless otherwise specified
 12 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Summary of reconciliation of income tax expense    
Federal tax expense at the statutory rate $ 1,831 $ 3,665
Current year permanent differences (18) (500)
State income taxes, net of federal tax impact (406) (562)
Dividend from foreign subsidiary 0 2,593
Foreign repatriation, net of foreign tax credits 4,735 0
Mexican minimum taxes 1,021 0
Effect of tax rates of foreign subsidiaries (440) (758)
Currency translation effect on temporary differences (882) 123
Valuation allowance (4,444) (2,172)
Prior year adjustment 852 208
Other (1) 24
Total income tax expense (benefit) $ 2,248 $ 2,621