2. Receivables

12 Months Ended

Dec. 31, 2014

Receivables

2. Receivables

Accounts receivable at December 31, 2014 and 2013, consist of the following:

	2014			2013
Billed-federal government	$	758,818		$	1,197,454
Billed-commercial and other		212,324			214,653
Total billed		971,142			1,412,107
Unbilled		357			25,647
Allowance for doubtful accounts		(878	)		-
Accounts receivable, net	$	970,621		$	1,437,754

Billed receivables from the federal government include amounts due from both prime contracts and subcontracts where the federal government is the end customer.  Unbilled receivables are for services provided through the balance sheet date that are expected to be billed and collected within one year.