Interim Financial Information (Tables)

12 Months Ended

Dec. 31, 2016

Interim Financial Information [Abstract]

Schedule Of Interim Financial Information

	2016
	First Quarter		Second Quarter		Third Quarter		Fourth Quarter
Revenues	$	413,133	$	356,271	$	326,225	$	354,418
Cost of services and rentals (exclusive of
depreciation, depletion, amortization and accretion)		285,339		258,635		258,168		321,132
Depreciation, depletion, amortization and accretion		136,672		132,037		123,308		117,954
Reduction in value of assets		2,198		460,283		1,963		35,961
Loss from continuing operations		(84,536)		(468,632)		(113,913)		(166,259)
Loss from discontinued operations, net of tax		(2,267)		(2,225)		(4,085)		(44,982)
Net loss	$	(86,803)	$	(470,857)	$	(117,998)	$	(211,241)
Loss per share from continuing operations:
Basic and diluted	$	(0.56)	$	(3.09)	$	(0.75)	$	(1.10)
Loss per share from discontinued operations:
Basic and diluted	$	(0.01)	$	(0.02)	$	(0.03)	$	(0.30)
	2015
	First Quarter		Second Quarter		Third Quarter		Fourth Quarter
Revenues	$	917,235	$	710,784	$	601,396	$	545,150
Cost of services and rentals (exclusive of
depreciation, depletion, amortization and accretion)		582,246		465,533		420,485		397,548
Depreciation, depletion, amortization and accretion		162,220		158,352		146,757		144,818
Reduction in value of assets		-		807,637		755,632		175,618
Loss from continuing operations		(1,497)		(775,132)		(816,587)		(214,547)
Loss from discontinued operations, net of tax		(9,640)		(9,857)		(4,610)		(22,848)
Net loss	$	(11,137)	$	(784,989)	$	(821,197)	$	(237,395)
Loss per share from continuing operations:
Basic and diluted	$	(0.02)	$	(5.15)	$	(5.42)	$	(1.43)
Loss per share from discontinued operations:
Basic and diluted	$	(0.06)	$	(0.07)	$	(0.03)	$	(0.15)