Accounts Receivable

12 Months Ended

Dec. 31, 2012

Receivables [Abstract]

Loans, Notes, Trade and Other Receivables Disclosure [Text Block]

3. Accounts Receivable

The Company maintains an allowance for uncollectible accounts receivable based on management’s assessment of the collectability of its customer accounts by reviewing customer payment patterns and other relevant factors. The Company reviews the adequacy of the allowance for uncollectible accounts on a quarterly basis and adjusts the balance as determined necessary. The following is a rollforward of the Company’s allowance for doubtful accounts:

	2012			2011
Balance, beginning of period	$	169,191		$	119,295
Provision for (recoveries of) doubtful accounts		(28,866	)		49,896
Write-offs (write-backs)		(18,742	)		—
Balance, end of period	$	121,583		$	169,191