Note 4 - Acquisitions (Detail) - The intangible assets of Cortiva and Onboard that we acquired are as follows (Cortiva and Onboard [Member], USD $) In Thousands, unless otherwise specified	Dec. 31, 2012
Fair value of acquired intangible asset	$ 18,792
Trade Names [Member]
Useful life of acquired intangible asset	Indefinite
Fair value of acquired intangible asset	4,606
Title IV Rights [Member]
Useful life of acquired intangible asset	Indefinite
Fair value of acquired intangible asset	11,640
Noncompete Agreements [Member]
Useful life of acquired intangible asset	Five years
Fair value of acquired intangible asset	840
Lease Agreements [Member]
Useful life of acquired intangible asset	Lease term
Fair value of acquired intangible asset	$ 1,706

The aggregate amount assigned to a major class of finite-lived intangible assets acquired either individually or as part of a group of assets (in either an asset acquisition or business combination). A major class is composed of intangible assets that can be grouped together because they are similar, either by their nature or by their use in the operations of a company.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

-SubTopic 30

-Section 50

-Paragraph 1

-Subparagraph (a)(1)

-URI http://asc.fasb.org/extlink&oid=7658586&loc=d3e16265-109275

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 142

-Paragraph 44

-Subparagraph a(1)

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant