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Summary of Business and Significant Accounting Policies (Tables)
 12 Months Ended
Jan. 31, 2015
Accounting Policies [Abstract]  
Depreciation and amortization computed on the straight-line method for financial reporting purposes based upon estimated useful lives
Depreciation and amortization are computed on the straight-line method for financial reporting purposes based upon the following estimated useful lives:
Land improvements
5 to 25 years
Buildings and building improvements
5 to 40 years
Machinery and equipment
3 to 10 years
Leasehold improvements
shorter of lease or useful life
Asset retirement obligations related to leased manufacturing facilities
 
January 31,
 
2015
 
2014
Balance at beginning of period
$
563,000

 
$
554,000

Decrease in obligation
—

 
—

Accretion expense
9,000

 
9,000

Balance at end of period
$
572,000

 
$
563,000
Computation of basic and diluted loss per share
The following table sets forth the computation of basic and diluted income (loss) per share:
In thousands, except per share data
2014
 
2013
 
2012
Numerator
 
 
 
 
 
Net income (loss)
$
849

 
$
(1,730
)
 
$
(3,830
)
Denominator
 
 
 
 
 
Weighted-average shares — basic
14,756

 
14,620

 
14,387

Dilutive effect of equity incentive plans
231

 
—

 
—

Weighted-average shares — diluted (1)
14,987

 
14,620

 
14,387

Net income (loss) per common share
 
 
 
 
 
Basic
$
0.06

 
$
(0.12
)
 
$
(0.27
)
Diluted
0.06

 
(0.12
)
 
(0.27
)
___________________
(1)
For fiscal years 2013 and 2012, approximately 180,000 and 119,000 shares of common stock equivalents, respectively, were excluded in the computation of diluted net income per share, as the effect would be anti-dilutive.
Schedule of Accumulated Other Comprehensive Income (Loss)
Accumulated Other Comprehensive Income (Loss), Net of Tax

The following table summarizes the changes in accumulated balances of other comprehensive income (loss) for the year ended January 31, 2015 and 2014:

 
January 31,
(in thousands)
2015
 
2014
Balance as of beginning of year
$
(13,980
)
 
$
(15,986
)
 
 
 
 
Other comprehensive (loss) income before reclassifications
(7,537
)
 
458

Amounts reclassified from AOCI
1,283

 
1,548

Net current period other comprehensive (loss) income
(6,254
)
 
2,006

 
 
 
 
Balance as of end of year
$
(20,234
)
 
$
(13,980
)