Valuation and Qualifying Accounts (Tables)

12 Months Ended

Dec. 31, 2014

Valuation And Qualifying Accounts [Abstract]

Schedule of Valuation and Qualifying Accounts

	Balance at beginning of year		Additions charged to expense		Deductions		Balance at end of year
Year ended December 31, 2013
Returns and allowances and doubtful accounts reserve	$	468,400	$	2,039,300	$	1,686,000	$	821,700
Year ended December 31, 2014
Returns and allowances and doubtful accounts reserve	$	821,700	$	2,056,300	$	2,082,700	$	795,300