Interim Financial Information (Unaudited) (Tables)

12 Months Ended

Dec. 31, 2015

Interim Financial Information (Unaudited) [Abstract]

Schedule Of Interim Financial Information

	2015
	First Quarter		Second Quarter		Third Quarter		Fourth Quarter
Revenues	$	917,235	$	710,784	$	601,396	$	545,150
Less:
Cost of services and rentals		582,246		465,533		420,485		397,548
Depreciation, depletion, amortization     and accretion		162,220		158,352		146,757		144,818
Gross profit		172,769		86,899		34,154		2,784
Reduction in value of assets		-		807,637		755,632		175,618
Net 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)
	2014
	First Quarter		Second Quarter		Third Quarter		Fourth Quarter
Revenues	$	1,061,418	$	1,107,552	$	1,209,026	$	1,178,626
Less:
Cost of services and rentals		651,605		650,293		721,692		711,243
Depreciation, depletion, amortization     and accretion		162,318		160,965		170,154		157,377
Gross profit		247,495		296,294		317,180		310,006
Net income from continuing operations		42,626		79,057		85,743		73,364
Loss from discontinued operations, net of tax		(5,954)		(3,895)		(5,886)		(7,238)
Net income		36,672		75,162		79,857		66,126
Earnings per share from continuing operations:
Basic	$	0.27	$	0.51	$	0.55	$	0.49
Diluted		0.27		0.50		0.55		0.48
Loss per share from discontinued operations:
Basic and diluted	$	(0.04)	$	(0.03)	$	(0.03)	$	(0.05)