Valuation And Qualifying Accounts

12 Months Ended

Dec. 31, 2016

Valuation And Qualifying Accounts [Abstract]

Valuation And Qualifying Accounts

SCHEDULE II

VALUATION AND QUALIFYING ACCOUNTS

FOR THE YEARS ENDED DECEMBER 31, 2016  AND 2015

			Additions
	Balance at		Charged to
	Beginning of		Cost and				Balance at the
	Year		Expenses		Deductions		End of Year
Allowance for doubtful accounts and returns:
Year ended December 31, 2016	$	93,478	$	292,690	$	(6,351)	$	379,817
Year ended December 31, 2015	$	131,464	$	(9,463)	$	(28,523)	$	93,478
Allowance for inventories valuation:
Year ended December 31, 2016	$	19,971	$	283,441	$	(30,798)	$	272,614
Year ended December 31, 2015	$	59,634	$	42,258	$	(81,921)	$	19,971