Schedule II - Valuation and Qualifying Accounts

12 Months Ended

Dec. 31, 2018

Notes to Financial Statements

SEC Schedule, 12-09, Schedule of Valuation and Qualifying Accounts Disclosure [Text Block]

SCHEDULE II – VALUATION AND QUALIFYING ACCOUNTS

Allowance for Doubtful Accounts

Year ended December 31,	Beginning Balance		Additions Charged to General and Administrative Expenses		Deductions Accounts Written Off During Period			Ending Balance
(in thousands)
2018	$	-	$	-	$	-		$	-
2017	$	-	$	-	$	-		$	-
2016	$	10	$	-	$	(10	)	$	-