3. Allowance for Doubtful Accounts (Tables)

12 Months Ended

Dec. 31, 2016

Allowance For Doubtful Accounts Tables

Schedule of Allowance for Doubtful Accounts

	Years Ended December 31,
	2016			2015
Balance, beginning of year	$	49		$	49
Provision for doubtful accounts		17			—
Uncollectible accounts written off		(16	)		—
Balance, end of year	$	50		$	49