Note 7 - Employee Benefit And Savings Plans (Detail) - Summary of contributions to 401(k) plan: (USD $)	12 Months Ended
Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Maximum Matching Contribution per Participant	$ 7,500	$ 7,350	$ 7,350
Total Matching Contribution	$ 308,567	$ 217,539	$ 199,716

Maximum amount per employee, by the terms of the plan, that the employer may contribute to a defined contribution plan.

No definition available.

Name:	us-gaap_DefinedContributionPlanMaximumAnnualContributionPerEmployeeAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration