Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2017

Significant Accounting Policies

Schedule of carrying amount of goodwill by reportable segment

Years Ended December 31,	2017		2016
(in thousands)
Technical Services	$	30,992	$	30,992
Support Services		1,158		1,158
Goodwill	$	32,150	$	32,150

Schedule of reconciliation of weighted average shares outstanding

(In thousands except per share data )	2017			2016			2015
Net income (loss) available for stockholders	$	162,511		$	(141,246	)	$	(99,561	)
Less:  Adjustments for earnings/ loss attributable to participating securities		(2,102	)		(147	)		(240	)
Net income (loss) used in calculating earnings (loss) per share	$	160,409		$	(141,393	)	$	(99,801	)
Weighted average shares outstanding (including participating securities)		217,194			217,509			213,632
Adjustment for participating securities		(2,891	)		(3,282	)		(3,359	)
Shares used in calculating basic and diluted earnings (loss) per share		214,303			214,227			210,273