Consolidated Statement of Shareholders' Equity - 9 months ended Oct. 31, 2015 - USD ($) $ in Thousands	Total	Common Stock [Member]	Additional Paid-in Capital [Member]	Accumulated Deficit
Common Stock, Shares, Outstanding period beginning at Jan. 31, 2015	56,448,663	56,448,663
Total Shareholders' Equity period beginning at Jan. 31, 2015	$ 84,528	$ 564	$ 418,846	$ (334,882)
Net income (loss)	(12,951)	$ 0	0	(12,951)
Stock Issued During Period, Shares, New Issues		676,772
Stock Issued During Period, Value, New Issues	2,503	$ 7	2,496	0
Share-based payment compensation	$ 2,138	$ 0	2,138	0
Share-based payment compensation		0
Common Stock, Shares, Outstanding period end at Oct. 31, 2015	57,125,435	57,125,435
Total Shareholders' Equity period end at Oct. 31, 2015	$ 76,218	$ 571	$ 423,480	$ (347,833)