Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2016

Significant Accounting Tables Policies [Abstract]

Schedule Of Earnings Per Share

The following table provides a reconciliation of components of basic and diluted net net income per common share:
		December 31,
		2016		2015		2014
Net net income	$	56,151	$	(3,207,220)	$	542,851
Weighted average common shares outstanding
during the period		153,378		153,192		153,136
Effect of dilutive instruments		703		-	(1)	1,558
Weighted average common shares outstanding during
the period including the effects of dilutive instruments		154,081		153,192		154,694
Net net income per common share - basic	$	0.37	$	(20.94)	$	3.54
Net net income per common share - fully diluted	$	0.36	$	(20.94)	$	3.51
Number of shares not included in dilutive earnings per share that would have been anti-dilutive because the exercise price was greater than the average market price of
the common shares		1,437		-	(1)	1,377
(1) Due to the net loss for the year ended December 31, 2015, 1.7 million shares for options and restricted stock units were anti-dilutive and excluded from the computation of net loss per share.