CONSOLIDATED STATEMENTS OF OPERATIONS (USD $) In Thousands, except Per Share data, unless otherwise specified	12 Months Ended
	Jan. 31, 2013	Jan. 31, 2012	Jan. 31, 2011
Revenues	$ 1,075,624	$ 1,112,758	$ 999,905
Cost of revenues (exclusive of depreciation, amortization, and impairment charges shown below)	(875,439)	(870,741)	(776,392)
Selling, general and administrative expenses	(163,962)	(164,874)	(139,877)
Depreciation and amortization	(61,397)	(56,040)	(44,837)
Impairment charges	(8,431)	(96,579)
Loss on remeasurement of equity method investment	(7,705)
Equity in earning of affiliates	20,572	24,647	13,153
Interest expense	(4,309)	(2,357)	(1,594)
Other income, net	5,824	9,678	519
(Loss) income from continuing operations before income taxes	(19,223)	(43,508)	50,877
Income tax benefit (expense)	8,276	(9,621)	(21,553)
Net (loss) income from continuing operations	(10,947)	(53,129)	29,324
Net (loss) income from discontinued operations	(25,076)	(53)	2,263
Net (loss) income	(36,023)	(53,182)	31,587
Net income attributable to noncontrolling interests	(628)	(2,893)	(1,596)
Net (loss) income attributable to Layne	$ (36,651)	$ (56,075)	$ 29,991
(Loss) earnings per share information attributable to Layne Christensen shareholders:
Basic (loss) income per share - continuing operations	$ (0.59)	$ (2.88)	$ 1.43
Basic (loss) income per share - discontinued operations	$ (1.29)	$ 0.00	$ 0.12
Basic (loss) income per share	$ (1.88)	$ (2.88)	$ 1.55
Diluted (loss) income per share - continuing operations	$ (0.59)	$ (2.88)	$ 1.42
Diluted (loss) income per share - discontinued operations	$ (1.29)	$ 0.00	$ 0.11
Diluted (loss) income per share	$ (1.88)	$ (2.88)	$ 1.53
Weighted average shares outstanding - basic	19,485	19,455	19,393
Dilutive stock options and unvested shares			185
Weighted average shares outstanding - dilutive	19,485	19,455	19,578