Note 13 - Mergers and Acquisitions - Purchase Price Allocation Fair Value Measurement (Details) - USD ($) $ in Thousands			12 Months Ended
		Sep. 25, 2015	Dec. 31, 2016	Mar. 31, 2016		Dec. 31, 2015	Mar. 24, 2015	Dec. 31, 2014
Goodwill						$ 307,677		$ 219,953
Goodwill			5,390
Nabors Industries, Ltd. [Member]
Accounts receivable				$ 274,052			$ 262,973
Accounts receivable	[1]			11,079
Inventory				28,119			35,491
Inventory	[1]			(7,372)
Other current assets				6,917			8,857
Other current assets	[1]			(1,940)
Property, plant and equipment			$ 965,244	965,244			1,024,622
Property, plant and equipment	[1]			(59,378)
Goodwill				456,846			444,162
Goodwill	[1]			12,684
Other intangible assets				42,000			28,300
Other intangible assets	[1]			13,700
Other assets				8,258			11,171
Other assets	[1]			(2,913)
Total assets acquired				1,781,436			1,815,576
Total assets acquired	[1]			(34,140)
Accounts payable				(176,303)			(195,913)
Accounts payable	[1]			19,610
Other current liabilities				(31,316)			(23,813)
Other current liabilities	[1]			(7,503)
Deferred income taxes				(208,883)			(187,515)
Deferred income taxes	[1]			(21,368)
Total liabilities assumed				(416,502)			(407,241)
Total liabilities assumed	[1]			(9,261)
Net assets acquired				1,364,934			$ 1,408,335
Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Consideration Transferred		$ 43,400		$ (43,401)	[1]

[1] The measurement period adjustments reflect changes in the estimated fair values of certain assets and liabilities, including income taxes. The measurement period adjustments were recorded to reflect new information obtained about facts and circumstances existing as of the date the Merger was consummated and did not result from intervening events subsequent to that date.