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Accrued Expenses
9 Months Ended
Sep. 30, 2017
Accounts Payable and Accrued Liabilities [Abstract]  
Accrued Expenses
6. Accrued Expenses:

 

Accrued expenses include approximately $20.6 million and $14.1 million in advertising liabilities as of September 30, 2017 and December 31, 2016, respectively.