Summary of Significant Accounting Policies (Tables) |
12 Months Ended | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Dec. 31, 2017 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Accounting Policies [Abstract] | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Schedule of goodwill |
The changes in the carrying amount of goodwill for the years ended December 31, 2017 and 2016 were as follows:
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Summary of activity in allowance for sales returns |
A summary of activity in the allowance for sales returns, recorded on a net margin basis, was as follows:
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- Definition [Table Text Block] for Valuation Allowances and Reserves, Balance Rollforward [Table] No definition available.
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- References No definition available.
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- Definition Tabular disclosure of goodwill by reportable segment and in total which includes a rollforward schedule. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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