Earning Per Common Share (Schedule of Earnings Per Share, Basic and Diluted) (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Earnings Per Common Share [Abstract]
Net loss	$ (5,982)	$ (57,422)	$ (100,810)	$ (47,773)
Weighted average shares outstanding	10,296,000	10,256,000	10,264,000	10,266,000
Denominator for basic earnings per common share	10,296,000	10,256,000	10,264,000	10,266,000
Employee stock options	0	0	0	0
Other stock compensation plans	0	0	0	0
Dilutive potential common shares	0	0	0	0
Denominator for diluted earnings per common share - adjusted weighted average shares and assumed conversions	10,296,000	10,256,000	10,264,000	10,266,000
Basic loss per common share	$ (0.58)	$ (5.60)	$ (9.82)	$ (4.65)
Diluted loss per common share	(0.58)	(5.60)	(9.82)	(4.65)
Dividends paid per common share	$ 0.04	$ 0.04	$ 0.12	$ 0.12
Antidilutive shares excluded from computation of earnings per share	34	48	80	81