Accounts Receivable and Allowance for Doubtful Accounts (Tables)

12 Months Ended

Dec. 31, 2015

Accounts Receivable And Allowance for Doubtful Accounts

Schedule of accounts receivable, net

	December 31,
	2015		2014
	(in thousands)
Accounts receivable	$	360	$	308
Other receivables		615		42
Accounts receivable, net	$	975	$	350

Summary of changes in allowance for doubtful accounts

	Balance at Beginning of Period		Additions Charged to Expense/Against Revenue		Deductions			Balance at End of Period
	(in thousands)
Allowance for doubtful accounts:
Year ended December 31, 2015	$	—	$	—	$	—		$	—
Year ended December 31, 2014		12		—		(12	)		—
Year ended December 31, 2013		—		12		—			12