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Income Taxes - Income Tax Expense (Benefit) (Details) (USD $)
In Thousands, unless otherwise specified
 12 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
Income Tax Expense (Benefit) [Abstract]      
Current federal tax expense (benefit) $ 715 $ (16) $ 217
Deferred federal income tax expense (benefit) 2,036 120 (2,142)
Federal income tax expense (benefit), continuing operations 2,751 104 (1,925)
Current state and local tax expense (benefit) 146 179 136
Deferred state and local income tax expense (benefit) 254 (955) (998)
State and local income tax expense (benefit), continuing operations 400 (776) (862)
Current foreign tax expense (benefit) 248 212 154
Deferred foreign income tax expense (benefit) (137) (24) 21
Foreign income tax expense (benefit), continuing operations 111 188 175
Current income tax expense (benefit) 1,109 375 507
Deferred income tax expense (benefit) 2,153 (859) (3,119)
Net income tax expense (benefit) $ 3,262 $ (484) $ (2,612)