Note 3 - Intangible Assets (Detail) - Major components of intangible assets (Parentheticals)	3 Months Ended
Jun. 30, 2012
Customer Relationships [Member]
Useful life	10 years
Developed Technology [Member]
Useful life	5 years
Noncompete Agreements [Member]
Useful life	4 years

Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

No definition available.

Name:	us-gaap_FiniteLivedIntangibleAssetUsefulLife
Namespace Prefix:	us-gaap_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration