XML 73 R58.htm IDEA: XBRL DOCUMENT v3.3.1.900
Other Assets - Summary of Future Estimated Amortization Expense Related to Acquired Land Leasehold Interest and Technology Patents (Detail) - Acquired Land Leasehold Interest And Technology Patents
$ in Thousands
Jan. 31, 2016
USD ($)
Finite-Lived Intangible Assets [Line Items]  
2017 $ 1,027
2018 889
2019 520
2020 463
2021 301
Thereafter 9,601
Total $ 12,801