XML 57 R32.htm IDEA: XBRL DOCUMENT
v2.4.0.6

Lease information Property under capital lease (Tables) | 12 Months Ended
--- | ---
Jan. 31, 2013
Property under capital leases [Abstract] |
Schedule of Capital Leased Assets [Table Text Block] |
Property under capitalized leases | 2012 |  | 2011 |
Machinery and equipment | $3,325 | $1,956
Transportation equipment | 42 |  | 63 |
Computer equipment | 92 |  | 208 |
Subtotal | 3,459 |  | 2,227 |
Less accumulated amortization | 546 |  | 241 |
Total | $2,913 | $1,986
Fixed assets acquired under capital leases | $569 | $917
Fixed assets acquired in previous years now under capital leases |  | $845

X
- Details
Name: | mfri_PropertyUnderCapitalLeasesAbstract
Namespace Prefix: | mfri_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of long-lived, depreciable assets that are subject to a lease meeting the criteria for capitalization and are used in the normal conduct of business to produce goods and services. Examples may include land, buildings, machinery and equipment, and other types of furniture and equipment including, but not limited to, office equipment, furniture and fixtures, and computer equipment and software. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6455398&loc=d3e45280-112737 + Details
Name: | us-gaap_ScheduleOfCapitalLeasedAsssetsTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration