Note 12 - Mergers and Acquisitions - Property, Plant and Equipment Assets Acquired (Details) - USD ($) $ in Thousands		12 Months Ended
	Nov. 30, 2017	Dec. 31, 2017	Mar. 31, 2016	Mar. 24, 2015
Minimum [Member]
Property, Plant and Equipment, Useful Life		3 years
Maximum [Member]
Property, Plant and Equipment, Useful Life		25 years
Building and Building Improvements [Member] | Minimum [Member]
Property, Plant and Equipment, Useful Life		5 years
Building and Building Improvements [Member] | Maximum [Member]
Property, Plant and Equipment, Useful Life		25 years
Furniture and Fixtures [Member] | Minimum [Member]
Property, Plant and Equipment, Useful Life		3 years
Furniture and Fixtures [Member] | Maximum [Member]
Property, Plant and Equipment, Useful Life		5 years
Machinery and Equipment [Member] | Minimum [Member]
Property, Plant and Equipment, Useful Life		3 years
Machinery and Equipment [Member] | Maximum [Member]
Property, Plant and Equipment, Useful Life		10 years
Transportation Equipment [Member] | Minimum [Member]
Property, Plant and Equipment, Useful Life		3 years
Transportation Equipment [Member] | Maximum [Member]
Property, Plant and Equipment, Useful Life		10 years
O-Tex [Member]
Property and equipment	$ 64,496
O-Tex [Member] | Land [Member]
Property and equipment	2,010
O-Tex [Member] | Building and Building Improvements [Member]
Property and equipment	$ 5,700
O-Tex [Member] | Building and Building Improvements [Member] | Minimum [Member]
Property, Plant and Equipment, Useful Life	5 years
O-Tex [Member] | Building and Building Improvements [Member] | Maximum [Member]
Property, Plant and Equipment, Useful Life	25 years
O-Tex [Member] | Furniture and Fixtures [Member]
Property and equipment	$ 946
O-Tex [Member] | Furniture and Fixtures [Member] | Minimum [Member]
Property, Plant and Equipment, Useful Life	3 years
O-Tex [Member] | Furniture and Fixtures [Member] | Maximum [Member]
Property, Plant and Equipment, Useful Life	5 years
O-Tex [Member] | Machinery and Equipment [Member]
Property and equipment	$ 52,880
O-Tex [Member] | Machinery and Equipment [Member] | Minimum [Member]
Property, Plant and Equipment, Useful Life	2 years
O-Tex [Member] | Machinery and Equipment [Member] | Maximum [Member]
Property, Plant and Equipment, Useful Life	10 years
O-Tex [Member] | Construction in Progress [Member]
Property and equipment	$ 2,960
Nabors Industries, Ltd. [Member]
Property and equipment		$ 965,244	$ 965,244	$ 1,024,622
Nabors Industries, Ltd. [Member] | Land [Member]
Property and equipment		42,741
Nabors Industries, Ltd. [Member] | Building and Building Improvements [Member]
Property and equipment		$ 79,456
Nabors Industries, Ltd. [Member] | Building and Building Improvements [Member] | Minimum [Member]
Property, Plant and Equipment, Useful Life		2 years
Nabors Industries, Ltd. [Member] | Building and Building Improvements [Member] | Maximum [Member]
Property, Plant and Equipment, Useful Life		25 years
Nabors Industries, Ltd. [Member] | Furniture and Fixtures [Member]
Property and equipment		$ 2,845
Nabors Industries, Ltd. [Member] | Furniture and Fixtures [Member] | Minimum [Member]
Property, Plant and Equipment, Useful Life		2 years
Nabors Industries, Ltd. [Member] | Furniture and Fixtures [Member] | Maximum [Member]
Property, Plant and Equipment, Useful Life		5 years
Nabors Industries, Ltd. [Member] | Machinery and Equipment [Member]
Property and equipment		$ 628,791
Nabors Industries, Ltd. [Member] | Machinery and Equipment [Member] | Minimum [Member]
Property, Plant and Equipment, Useful Life		2 years
Nabors Industries, Ltd. [Member] | Machinery and Equipment [Member] | Maximum [Member]
Property, Plant and Equipment, Useful Life		10 years
Nabors Industries, Ltd. [Member] | Transportation Equipment [Member]
Property and equipment		$ 166,457
Nabors Industries, Ltd. [Member] | Transportation Equipment [Member] | Minimum [Member]
Property, Plant and Equipment, Useful Life		2 years
Nabors Industries, Ltd. [Member] | Transportation Equipment [Member] | Maximum [Member]
Property, Plant and Equipment, Useful Life		5 years
Nabors Industries, Ltd. [Member] | Construction in Progress [Member]
Property and equipment		$ 44,954