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Assets of Business Held for Sale & Sales of Businesses (Tables)
 3 Months Ended
Mar. 31, 2017
Discontinued Operations and Disposal Groups [Abstract]  
Summary of Assets of Businesses Held for Sale
The assets of businesses held for sale as December 31, 2016 are summarized as follows (in thousands):
 
December 31,
2016
Assets:
 
Intangible assets, net of accumulated amortization
$
8,194

Total assets of businesses held for sale
$
8,194