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Goodwill (Details) - USD ($)
$ in Thousands
6 Months Ended 12 Months Ended
Jun. 30, 2015
Dec. 31, 2013
Goodwill and Intangible Assets Disclosure [Abstract]    
Beginning balance $ 4,687  
Changes in goodwill during the year 0 $ 0
Ending balance $ 4,687 $ 4,687