Segment Information (Schedule of Segment Reporting Information) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015	Dec. 31, 2015
Segment Reporting Information [Line Items]
Identifiable assets	$ 786,525	$ 1,123,850	$ 821,993
Drilling Services Revenue	33,184	98,415
Drilling Services Costs and Expenses	17,440	62,295
Production Services Revenue	41,768	95,399
Production Services Costs and Expenses	34,849	68,769
Revenues	74,952	193,814
Operating Costs	52,289	131,064
Segment Margin	22,663	62,750
Depreciation and amortization	29,824	41,782
Capital Expenditures	5,493	48,816
Corporate, Non-Segment [Member]
Segment Reporting Information [Line Items]
Identifiable assets	20,342	836
Revenues	0	0
Operating Costs	0	0
Segment Margin	0	0
Depreciation and amortization	332	349
Capital Expenditures	96	303
Drilling Services Segment [Member]
Segment Reporting Information [Line Items]
Identifiable assets	495,442	687,719
Segment Margin	15,744	36,120
Depreciation and amortization	15,678	23,600
Capital Expenditures	2,108	33,056
Production Services Segment [Member]
Segment Reporting Information [Line Items]
Identifiable assets	270,741	435,295
Segment Margin	6,919	26,630
Depreciation and amortization	13,814	17,833
Capital Expenditures	$ 3,289	$ 15,457