Income Taxes - Additional Information (Details)	9 Months Ended
	Oct. 31, 2015 USD ($)
Income Taxes [Line Items]
Deferred tax assets, total	$ 78,200,000
Deferred tax liabilities	15,600,000
Deferred tax assets, valuation allowance	62,800,000
Alternative minimum tax credits carryforwards	2,300,000
Liability for unrecognized tax benefits	3,000,000
Unrecognized tax benefits, income tax penalties and interest accrued	0
Federal
Income Taxes [Line Items]
Net operating loss carryforwards	128,700,000
State and Local Jurisdiction
Income Taxes [Line Items]
Net operating loss carryforwards	$ 73,500,000
Domestic Tax Authority
Income Taxes [Line Items]
Net operating loss carryforwards, expiration year	2035
Net operating loss carryforwards, stock compensation deductions	$ 13,000,000
Foreign | Hong Kong
Income Taxes [Line Items]
Net operating loss carryforwards	100,000
Foreign | Canada
Income Taxes [Line Items]
Net operating loss carryforwards	$ 2,300,000