Fair Value Measurements (Details Textual) (USD $) In Millions, unless otherwise specified	6 Months Ended	12 Months Ended
Aug. 31, 2012	Feb. 29, 2012
Fair Value Measurements (Additional Textual) [Abstract]
Fair value of Company's Credit Agreement debt	$ 48.7	$ 198.0
Cumulative convertible preferred stock	6.25%	6.25%
Cumulative convertible preferred stock fair value	17.7	20.2
Dividends in arrears	12.3	10.5
Carrying value [Member]
Fair Value Measurements (Textual) [Abstract]
Carrying value of Company's Credit Agreement debt	49.1	203.8
Carrying value convertible preferred stock	$ 46.9	$ 46.9

This element represents the portion of the balance sheet assertion valued at fair value by the entity whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 825

-SubTopic 10

-Section 50

-Paragraph 10

-Subparagraph (a)

-URI http://asc.fasb.org/extlink&oid=7491637&loc=d3e13433-108611

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 825

-SubTopic 10

-Section 50

-Paragraph 12

-URI http://asc.fasb.org/extlink&oid=7491637&loc=d3e13476-108611

Name:	us-gaap_DebtInstrumentFairValue
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant