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Valuation and Qualifying Accounts
 12 Months Ended
Dec. 31, 2017
Valuation and Qualifying Accounts [Abstract]  
Valuation and Qualifying Accounts
Valuation and Qualifying Accounts
Years ended December 31, 2017, 2016 and 2015
Description
 
Balance at
beginning of
period
 
Charged to
costs and
expenses
 
Charged to
other
accounts
 
Deductions
 
Balance at
end of period
 
 
 
 
 
 
 
 
 
 
 
Allowance for uncollectible amounts, cash discounts, chargebacks, and credits issued for damaged products:
 
 
 
 
 
 
 
 
 
 
For the years ended
December 31:
 
 
 
 
 
 
 
 
 
 
2015
 
$
438,357

 
$
3,903,285

 
$
—

 
$
(3,960,402
)
(1) 
$
381,240

2016
 
381,240

 
3,755,804

 
—

 
(3,687,185
)
(1) 
449,859

2017
 
449,859

 
5,066,526

 
—

 
(5,008,851
)
(1) 
507,534

 
 
 
 
 
 
 
 
 
 
 
Valuation allowance for deferred tax assets:
 
 
 
 
 
 
 
 
 
 
For the years ended
December 31:
 
 
 
 
 
 
 
 
 
 
2015
 
$
152,074

 
$
33,423

 
$
—

 
$
—

 
$
185,497

2016
 
185,497

 
203,003

 
—

 
—

 
388,500

2017
 
388,500

 
(665,039
)
(2) 
15,908,774

 
—

 
15,632,235

(1) Composed of actual returns and credits for chargebacks and cash discounts.
(2) Amount includes $4,202,854 related to increase in the valuation allowance during the year, net of $4,867,893 related to the revaluation of deferred income tax balances for new rates under the Tax Act.