Schedule II - Valuation and Qualifying Accounts (Tables)

12 Months Ended

Dec. 31, 2018

Notes Tables

Valuation and Qualifying Accounts Disclosure [Table Text Block]

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	)	$	-