| Label | Element | Value |
|---|---|---|
| Issued stock upon stock option exercise | us-gaap_StockIssuedDuringPeriodValueStockOptionsExercised | $ 2,120 |
| Issued restricted stock | us-gaap_StockIssuedDuringPeriodValueRestrictedStockAwardGross | 13 |
| us-gaap_ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest | us-gaap_ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest | 5,008,882 |
| Stock compensation expense | us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue | 121,298 |
| Stock compensation expense | us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue | 142,180 |
| Retained Earnings [Member] | ||
| Issued stock | us-gaap_StockIssuedDuringPeriodValueNewIssues | 0 |
| Net loss | us-gaap_ProfitLoss | (2,966,890) |
| Net loss | us-gaap_ProfitLoss | $ (2,764,039) |
| Common Stock [Member] | ||
| Issued stock upon conversion of Preferred Stock (in shares) | us-gaap_StockIssuedDuringPeriodSharesConversionOfConvertibleSecurities | 1,437,531 |
| Issued stock upon stock option exercise | us-gaap_StockIssuedDuringPeriodValueStockOptionsExercised | $ 2 |
| Issued stock upon conversion of Series D Preferred Stock | us-gaap_StockIssuedDuringPeriodValueConversionOfConvertibleSecurities | 1,437 |
| Issued restricted stock | us-gaap_StockIssuedDuringPeriodValueRestrictedStockAwardGross | $ 13 |
| Issued stock upon stock option exercise (in shares) | us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised | 2,000 |
| Issued restricted stock (in shares) | us-gaap_StockIssuedDuringPeriodSharesRestrictedStockAwardForfeited | 12,500 |
| Preferred Stock [Member] | ||
| Issued stock | us-gaap_StockIssuedDuringPeriodValueNewIssues | $ 23 |
| Issued stock upon conversion of Preferred Stock (in shares) | us-gaap_StockIssuedDuringPeriodSharesConversionOfConvertibleSecurities | (23,000) |
| Issued stock (in shares) | us-gaap_StockIssuedDuringPeriodSharesNewIssues | 23,000 |
| Issued stock upon conversion of Series D Preferred Stock | us-gaap_StockIssuedDuringPeriodValueConversionOfConvertibleSecurities | $ (23) |
| Noncontrolling Interest [Member] | ||
| Issued stock | us-gaap_StockIssuedDuringPeriodValueNewIssues | 0 |
| Net loss | us-gaap_ProfitLoss | (2) |
| Net loss | us-gaap_ProfitLoss | (1) |
| Additional Paid-in Capital [Member] | ||
| Issued stock | us-gaap_StockIssuedDuringPeriodValueNewIssues | 0 |
| Stock subscribed | navb_StockSubscribedDuringPeriodValue | 4,974,005 |
| Issued stock upon stock option exercise | us-gaap_StockIssuedDuringPeriodValueStockOptionsExercised | 2,118 |
| Issued stock upon conversion of Series D Preferred Stock | us-gaap_StockIssuedDuringPeriodValueConversionOfConvertibleSecurities | (1,414) |
| Stock compensation expense | us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue | 121,298 |
| Stock compensation expense | us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue | 142,180 |
| Issued stock to 401(k) Plan | us-gaap_StockIssuedDuringPeriodValueEmployeeBenefitPlan | 76,816 |
| Stock issuance cost | us-gaap_AdjustmentsToAdditionalPaidInCapitalStockIssuedIssuanceCosts | 50,671 |
| Common Stock Subscription [Member] | ||
| Issued stock | us-gaap_StockIssuedDuringPeriodValueNewIssues | 0 |
| Stock subscribed | navb_StockSubscribedDuringPeriodValue | $ 995 |
| Issued stock (in shares) | us-gaap_StockIssuedDuringPeriodSharesNewIssues | 0 |
| Stock subscribed (in shares) | navb_StockSubscribedDuringPeriodShares | 995,000 |
| Preferred Stock Subscriptions Receivable [Member] | ||
| Issued stock | us-gaap_StockIssuedDuringPeriodValueNewIssues | $ 1,800,000 |
| Common Stock Subscriptions Receivable [Member] | ||
| Issued stock | us-gaap_StockIssuedDuringPeriodValueNewIssues | 0 |
| Stock subscribed | navb_StockSubscribedDuringPeriodValue | (4,975,000) |
| Preferred Stock Subscription [Member] | ||
| Issued stock | us-gaap_StockIssuedDuringPeriodValueNewIssues | $ (23) |
| Issued stock (in shares) | us-gaap_StockIssuedDuringPeriodSharesNewIssues | (23,000) |
| Series E Preferred Stock [Member] | Preferred Stock [Member] | ||
| Issued stock | us-gaap_StockIssuedDuringPeriodValueNewIssues | $ 50 |
| Issued stock (in shares) | us-gaap_StockIssuedDuringPeriodSharesNewIssues | 50,000 |
| Series E Preferred Stock [Member] | Additional Paid-in Capital [Member] | ||
| Issued stock | us-gaap_StockIssuedDuringPeriodValueNewIssues | $ 4,980,659 |
| Series D Preferred Stock [Member] | ||
| Stock subscribed | navb_StockSubscribedDuringPeriodValue | 500,000 |
| Stock subscribed | navb_StockSubscribedDuringPeriodValue | $ (2,207,699) |
| Series D Preferred Stock [Member] | Common Stock [Member] | ||
| Issued stock upon conversion of Preferred Stock (in shares) | us-gaap_StockIssuedDuringPeriodSharesConversionOfConvertibleSecurities | 1,513,978 |
| Issued stock upon conversion of Series D Preferred Stock | us-gaap_StockIssuedDuringPeriodValueConversionOfConvertibleSecurities | $ 1,514 |
| Series D Preferred Stock [Member] | Preferred Stock [Member] | ||
| Issued stock | us-gaap_StockIssuedDuringPeriodValueNewIssues | $ 32 |
| Issued stock upon conversion of Preferred Stock (in shares) | us-gaap_StockIssuedDuringPeriodSharesConversionOfConvertibleSecurities | (31,750) |
| Issued stock (in shares) | us-gaap_StockIssuedDuringPeriodSharesNewIssues | 31,750 |
| Issued stock upon conversion of Series D Preferred Stock | us-gaap_StockIssuedDuringPeriodValueConversionOfConvertibleSecurities | $ (32) |
| Series D Preferred Stock [Member] | Additional Paid-in Capital [Member] | ||
| Stock subscribed | navb_StockSubscribedDuringPeriodValue | 5,542,245 |
| Issued stock upon conversion of Series D Preferred Stock | us-gaap_StockIssuedDuringPeriodValueConversionOfConvertibleSecurities | (1,482) |
| Series D Preferred Stock [Member] | Preferred Stock Subscriptions Receivable [Member] | ||
| Issued stock | us-gaap_StockIssuedDuringPeriodValueNewIssues | 250,000 |
| Stock subscribed | navb_StockSubscribedDuringPeriodValue | 500,000 |
| Stock subscribed | navb_StockSubscribedDuringPeriodValue | (7,750,000) |
| Series D Preferred Stock [Member] | Preferred Stock Subscription [Member] | ||
| Issued stock | us-gaap_StockIssuedDuringPeriodValueNewIssues | (31) |
| Stock subscribed | navb_StockSubscribedDuringPeriodValue | $ 56 |
| Issued stock (in shares) | us-gaap_StockIssuedDuringPeriodSharesNewIssues | (31,750) |
| Stock subscribed (in shares) | navb_StockSubscribedDuringPeriodShares | 55,423 |