Accounts Receivable (Tables)

12 Months Ended

Dec. 31, 2014

Receivables [Abstract]

Schedule of Credit Losses for Financing Receivables, Current [Table Text Block]

The following is a rollforward of the Company’s allowance for doubtful accounts:

	2014		2013
Balance, beginning of period	$	144,921	$	121,583
Provision for (recoveries of) doubtful accounts		44,178		82,332
Write-offs		(93,574)		(58,994)
Balance, end of period	$	95,525	$	144,921