Geographic Areas - Schedule of Segment Reporting (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016	Dec. 31, 2016
Segment Reporting Information [Line Items]
Products	$ 75,885	$ 101,277	$ 269,570	$ 352,519
Services	24,461	22,363	77,928	80,121
Revenues	100,346	123,640	347,498	432,640
Impairment and other charges	60,968	0	60,968	0
Depreciation and amortization	9,518	7,592	32,231	23,092
Income before income taxes	(61,100)	23,877	(61,108)	119,446
Total Long-Lived Assets	444,975		444,975		$ 404,693
Total Assets	1,437,464		1,437,464		1,461,404
Intercompany
Segment Reporting Information [Line Items]
Revenues	13,252	7,888	23,787	29,827
Eliminations
Segment Reporting Information [Line Items]
Revenues	(13,252)	(7,888)	(23,787)	(29,827)
Income before income taxes	62	(1,220)	(1,188)	2,401
Total Long-Lived Assets	(20,870)		(20,870)		(480)
Total Assets	(25,389)		(25,389)		(2,526)
Western Hemisphere
Segment Reporting Information [Line Items]
Products	43,344	61,071	162,931	202,457
Services	14,406	13,395	49,298	47,171
Western Hemisphere | Intercompany
Segment Reporting Information [Line Items]
Revenues	12,569	6,444	22,700	27,660
Western Hemisphere | Operating Segments
Segment Reporting Information [Line Items]
Revenues	70,319	80,910	234,929	277,288
Impairment and other charges	45,439	0	45,439	0
Depreciation and amortization	6,827	5,052	24,153	15,157
Income before income taxes	(40,472)	22,009	(28,558)	85,921
Total Long-Lived Assets	373,394		373,394		317,875
Total Assets	771,401		771,401		775,358
Eastern Hemisphere
Segment Reporting Information [Line Items]
Products	17,200	26,133	53,567	89,207
Services	7,557	7,264	20,685	28,275
Eastern Hemisphere | Intercompany
Segment Reporting Information [Line Items]
Revenues	267	109	554	316
Eastern Hemisphere | Operating Segments
Segment Reporting Information [Line Items]
Revenues	25,024	33,506	74,806	117,798
Impairment and other charges	8,532	0	8,532	0
Depreciation and amortization	1,073	1,171	3,228	3,856
Income before income taxes	(2,882)	15,618	3,401	57,352
Total Long-Lived Assets	34,248		34,248		33,338
Total Assets	325,476		325,476		318,529
Asia Pacific
Segment Reporting Information [Line Items]
Products	15,341	14,073	53,072	60,855
Services	2,498	1,704	7,945	4,675
Asia Pacific | Intercompany
Segment Reporting Information [Line Items]
Revenues	416	1,335	533	1,851
Asia Pacific | Operating Segments
Segment Reporting Information [Line Items]
Revenues	18,255	17,112	61,550	67,381
Impairment and other charges	6,997	0	6,997	0
Depreciation and amortization	1,015	1,070	3,046	3,319
Income before income taxes	(4,525)	73	3,115	11,296
Total Long-Lived Assets	58,203		58,203		53,960
Total Assets	365,976		365,976		$ 370,043
Corporate Segment | Operating Segments
Segment Reporting Information [Line Items]
Depreciation and amortization	603	299	1,804	760
Income before income taxes	$ (13,283)	$ (12,603)	$ (37,878)	$ (37,524)