Segment Information (Schedule of Segment Reporting Information) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016	Dec. 31, 2016
Segment Reporting Information [Line Items]
Identifiable assets	$ 708,328	$ 786,525	$ 700,102
Drilling Services Revenue	39,016	33,184
Drilling Services Costs and Expenses	27,107	17,440
Production Services Revenue	56,741	41,768
Production Services Costs and Expenses	45,641	34,849
Revenues	95,757	74,952
Operating Costs	72,748	52,289
Segment Margin	23,009	22,663
Depreciation and amortization	24,992	29,824
Capital Expenditures	27,607	5,493
Corporate, Non-Segment [Member]
Segment Reporting Information [Line Items]
Identifiable assets	11,300	20,342
Depreciation and amortization	300	332
Capital Expenditures	141	96
Drilling Services Segment [Member]
Segment Reporting Information [Line Items]
Identifiable assets	448,552	495,442
Segment Margin	11,909	15,744
Depreciation and amortization	13,101	15,678
Capital Expenditures	9,838	2,108
Production Services Segment [Member]
Segment Reporting Information [Line Items]
Identifiable assets	248,476	270,741
Segment Margin	11,100	6,919
Depreciation and amortization	11,591	13,814
Capital Expenditures	$ 17,628	$ 3,289