General (Details)			3 Months Ended
	Apr. 22, 2020	Apr. 20, 2020 USD ($) $ / shares shares	Mar. 31, 2020 item country $ / shares shares	Apr. 19, 2020 $ / shares shares	Dec. 31, 2019 $ / shares shares
Nature of Operations
Number of countries company has actively marketed rigs for land based drilling operations | country			20
Actively marketed rigs for offshore based drilling operations			33
Reverse stock split ratio	50	50
Common shares, shares authorized | shares		16,000,000	16,000,000	800,000,000	16,000,000
Common shares, par value | $ / shares		$ 0.05	$ 0.05	$ 0.001	$ 0.05
Common stock shares authorized increase percentage		100.00%
Common stock shares authorized amount | $		$ 1,600,000
Minimum
Nature of Operations
Reverse stock split ratio		15
Maximum
Nature of Operations
Reverse stock split ratio		50
United States and Canada
Nature of Operations
Actively marketed rigs for land based drilling operations			366
Countries Other Than United States and Canada
Nature of Operations
Actively marketed rigs for land based drilling operations			16