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. This item includes currency on hand as well as demand deposits with banks or financial institutions. It also includes other kinds of accounts that have the general characteristics of demand deposits in that the Company may deposit additional funds at any time and also effectively may withdraw funds at any time without prior notice or penalty. Cash equivalents, excluding items classified as marketable securities, include short-term, highly liquid investments that are both readily convertible to known amounts of cash, and so near their maturity that they present minimal risk of changes in value because of changes in interest rates. Generally, only investments with original maturities of three months or less qualify under that definition. Original maturity means original maturity to the entity holding the investment. For example, both a three-month US Treasury bill and a three-year Treasury note purchased three months from maturity qualify as cash equivalents. However, a Treasury note purchased three years ago does not become a cash equivalent when its remaining maturity is three months.

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For investments which are quantified by principal amount, the principle balance held at close of period.

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Note 7 - Fair Value Measurements (Detail) (USD $)	Mar. 31, 2013	Jan. 28, 2013	Dec. 31, 2012	Mar. 31, 2013 Cash And Cash Equivalent [Member]	Dec. 31, 2012 Cash And Cash Equivalent [Member]	Mar. 31, 2013 Marketable Securities [Member]	Dec. 31, 2012 Marketable Securities [Member]	Nov. 30, 2012 Three Point Seven Five Percent Unsecured Convertible Subordinated Debentures Due In 2026 [Member]	Jan. 28, 2013 "School Specialties" [Member]
Cash and Cash Equivalents, Fair Value Disclosure				$ 47,500,000	$ 68,200,000	$ 13,100,000	$ 11,900,000
Investment Owned, Balance, Principal Amount								11,900,000
Debt Instrument, Interest Rate, Stated Percentage								3.75%
Investment Owned, at Cost								6,000,000
Debtor In Possession Financing Receivable		22,000,000
Debtor-in-Possession Financing, Amount Arranged									155,000,000
Convertible Notes Payable, Current	$ 346,000		$ 346,000