Sale of Fishing and Rental Services Operations (Tables)

12 Months Ended

Dec. 31, 2015

Discontinued Operations and Disposal Groups [Abstract]

Schedule of Disposal Groups, Including Discontinued Operations, Income Statement, Balance Sheet and Additional Disclosures [Table Text Block]

Statement of operations information for the F&R operations is as follows (amounts in thousands):

	Year ended December 31,
	2014			2013
Revenues	$	7,828		$	12,459
Operating costs	5,097			8,000
F&R margin	$	2,731		$	4,459
Income (loss) before income taxes	$	(162	)	$	242