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Accumulated Other Comprehensive Loss (Details) - USD ($)
12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Accumulated Other Comprehensive Income [Roll Forward]      
Beginning balance $ 13,078,000 $ 18,064,000 $ 21,387,000
Ending balance 14,059,000 13,078,000 18,064,000
Amounts reclassified from accumulated other comprehensive income 0 0 0
AOCI      
Accumulated Other Comprehensive Income [Roll Forward]      
Beginning balance (3,597,000) (3,787,000) (3,908,000)
Ending balance (4,214,000) (3,597,000) (3,787,000)
Foregin Currency Translation      
Accumulated Other Comprehensive Income [Roll Forward]      
Other comprehensive income (loss) due to foreign currency translation, net of tax $ (617,000) $ 190,000 $ 121,000