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Note 13 - Employee Benefit Plans (Details) (USD $)
In Thousands, unless otherwise specified
 12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Compensation and Retirement Disclosure [Abstract]    
Defined Contribution Plan, Employer Matching Contribution, Percent of Employees' Gross Pay 10.00%us-gaap_DefinedContributionPlanEmployerMatchingContributionPercent  
Defined Contribution Plan, Maximum Annual Employer Matching Contribution per Emplyee, Amount $ 5intt_DefinedContributionPlanMaximumAnnualEmployerMatchingContributionPerEmplyeeAmount  
Defined Contribution Plan Employer Matching Contribution Vesting Period 4 years  
Defined Contribution Plan, Employer Discretionary Contribution Amount $ 317us-gaap_DefinedContributionPlanEmployerDiscretionaryContributionAmount $ 320us-gaap_DefinedContributionPlanEmployerDiscretionaryContributionAmount