Discontinued Operations (Tables)

12 Months Ended

Dec. 31, 2015

Discontinued Operations And Disposal Groups [Abstract]

Schedule of Operation from Discontinued Operations

The following table provides the results of operations from discontinued operations:

	2014			2013
Operating revenues
Contract drilling services	$	993,253		$	1,615,325
Reimbursables		21,899			45,582
Labor contract drilling services		19,304			35,146
Other		2			94
Operating revenues from discontinued operations	$	1,034,458		$	1,696,147
Income from discontinued operations
Income from discontinued operations before income    taxes	$	216,391		$	379,591
Income tax provision		(55,889	)		(75,489	)
Net income from discontinued operations, net of tax	$	160,502		$	304,102