Other Current Assets (Tables)

12 Months Ended

Dec. 31, 2014

Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]

Schedule of Other Current Assets [Table Text Block]

Other current assets were as follows:

	December 31,
	2014		2013
	(In thousands)
Excise and other taxes receivable	$	1,508	$	—
Material and chemical inventories	986		1,048
Exchange and other receivables	56		—
Other current assets	$	2,550	$	1,048