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Non-controlling Interest (Tables)
12 Months Ended
Dec. 31, 2014
Non-controlling Interest [Abstract]  
Schedule of Changes in Non-controlling Interest
Year Ended 
December 31,
2013
 
Balance at beginning of period $ 1,842  
Net income attributable to non-controlling interest in consolidated subsidiary   20  
Purchase of non-controlling interest in consolidated subsidiary   (1,862 )
Balance at end of period   $