Significant Accounting Policies - Additional Information (Details) - USD ($)	3 Months Ended			9 Months Ended
	Sep. 30, 2020	Mar. 31, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019	Feb. 26, 2019
Accounting Policies [Line Items]
Lease revenues	$ 7,066,000		$ 8,492,000	$ 23,255,000	$ 28,899,000
Goodwill impairment loss		$ 7,700,000	0		0
Non-cash inventory write-downs	0		0	17,272,000	0
Long-lived asset write-downs				7,800,000
Severance costs	0		0	8,399,000	1,125,000
Restructuring costs				1,400,000
Restructuring and other charges	$ 602,000		$ 546,000	$ 34,902,000	$ 3,961,000
Shares authorized to be purchased (up to) (in shares)						$ 100,000,000
Treasury stock shares (in shares)	0		75,737	808,389	125,888
Average price of shares (in dollars per share)			$ 44.45	$ 30.91	$ 42.60
Treasury stock, value of acquired shares			$ 3,400,000	$ 25,000,000.0	$ 5,400,000
Reclassified from selling general and administrative cost to foreign currency transaction gain loss			1,100,000		2,100,000
Revenues	$ 84,229,000		99,735,000	254,484,000	277,454,000
Net income (loss)	14,326,000		(1,310,000)	(19,514,000)	(5,679,000)
Out-of-period adjustments
Accounting Policies [Line Items]
Net income (loss)			(1,500,000)
Eastern Hemisphere [Member]
Accounting Policies [Line Items]
Goodwill impairment loss		$ 7,700,000
Running Tools [Member]
Accounting Policies [Line Items]
Lease revenues	6,600,000			21,700,000
Rental Facilities [Member]
Accounting Policies [Line Items]
Lease revenues	500,000			1,600,000
Products
Accounting Policies [Line Items]
Revenues	$ 66,451,000		81,851,000	$ 197,142,000	$ 224,518,000
Products | Out-of-period adjustments
Accounting Policies [Line Items]
Revenues			$ 3,400,000