|
Note 11 - Subsequent Events (Details Textual) (USD $)
|
1 Months Ended |
12 Months Ended |
1 Months Ended |
0 Months Ended |
1 Months Ended |
|
|
|
Dec. 17, 2014
|
Dec. 31, 2014
|
Dec. 31, 2013
|
Feb. 27, 2015
|
Feb. 11, 2015
|
Feb. 19, 2015
|
Jan. 20, 2015
|
Nov. 04, 2014
|
Jan. 22, 2015
|
| Subsequent Events [Abstract] |
|
|
|
|
|
|
|
|
|
| Treasury Stock, Shares, Acquired |
359,840us-gaap_TreasuryStockSharesAcquired
|
|
|
|
|
|
|
|
|
| Treasury Stock, Value, Acquired, Cost Method |
$ 4,500,000us-gaap_TreasuryStockValueAcquiredCostMethod
|
$ 4,661,000us-gaap_TreasuryStockValueAcquiredCostMethod
|
$ 52,000us-gaap_TreasuryStockValueAcquiredCostMethod
|
|
|
|
|
|
|
| George K. Broady [Member] |
|
|
|
|
|
|
|
|
|
| Subsequent Events [Abstract] |
|
|
|
|
|
|
|
|
|
| Noncontrolling Interest, Ownership Percentage by Noncontrolling Owners |
|
|
|
|
|
|
|
5.00%us-gaap_MinorityInterestOwnershipPercentageByNoncontrollingOwners
/ us-gaap_TitleOfIndividualAxis
= nhtc_GeorgeKBroadyMember
|
|
| Treasury Stock, Value, Acquired, Cost Method |
1,500,000us-gaap_TreasuryStockValueAcquiredCostMethod
/ us-gaap_TitleOfIndividualAxis
= nhtc_GeorgeKBroadyMember
|
|
|
|
|
|
|
|
|
| Subsequent Event [Member] |
|
|
|
|
|
|
|
|
|
| Subsequent Events [Abstract] |
|
|
|
|
|
|
|
|
|
| Common Stock, Dividends, Per Share, Declared |
|
|
|
$ 0.02us-gaap_CommonStockDividendsPerShareDeclared
/ us-gaap_SubsequentEventTypeAxis
= us-gaap_SubsequentEventMember
|
|
|
|
|
|
| Subsequent Event [Member] | Christopher R. O’Brien [Member] |
|
|
|
|
|
|
|
|
|
| Subsequent Events [Abstract] |
|
|
|
|
|
|
|
|
|
| Other Labor-related Expenses |
|
|
|
|
25,000us-gaap_OtherLaborRelatedExpenses
/ us-gaap_SubsequentEventTypeAxis
= us-gaap_SubsequentEventMember
/ us-gaap_TitleOfIndividualAxis
= nhtc_ChristopherROBrienMember
|
|
|
|
|
| Stock Issued During Period, Value, Restricted Stock Award, Gross |
|
|
|
|
3,058us-gaap_StockIssuedDuringPeriodValueRestrictedStockAwardGross
/ us-gaap_SubsequentEventTypeAxis
= us-gaap_SubsequentEventMember
/ us-gaap_TitleOfIndividualAxis
= nhtc_ChristopherROBrienMember
|
|
|
|
|
| Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period |
|
|
|
|
3 years
|
|
|
|
|
| Subsequent Event [Member] | George K. Broady [Member] |
|
|
|
|
|
|
|
|
|
| Subsequent Events [Abstract] |
|
|
|
|
|
|
|
|
|
| Noncontrolling Interest, Ownership Percentage by Noncontrolling Owners |
|
|
|
|
|
|
|
|
5.00%us-gaap_MinorityInterestOwnershipPercentageByNoncontrollingOwners
/ us-gaap_SubsequentEventTypeAxis
= us-gaap_SubsequentEventMember
/ us-gaap_TitleOfIndividualAxis
= nhtc_GeorgeKBroadyMember
|
| Treasury Stock, Shares, Acquired |
|
|
|
|
|
91,817us-gaap_TreasuryStockSharesAcquired
/ us-gaap_SubsequentEventTypeAxis
= us-gaap_SubsequentEventMember
/ us-gaap_TitleOfIndividualAxis
= nhtc_GeorgeKBroadyMember
|
|
|
|
| Stock Repurchase Program, Number of Shares Repurchased Per Day |
|
|
|
|
|
5,000nhtc_StockRepurchaseProgramNumberOfSharesRepurchasedPerDay
/ us-gaap_SubsequentEventTypeAxis
= us-gaap_SubsequentEventMember
/ us-gaap_TitleOfIndividualAxis
= nhtc_GeorgeKBroadyMember
|
|
|
|
| Treasury Stock, Value, Acquired, Cost Method |
|
|
|
|
|
1,100,000us-gaap_TreasuryStockValueAcquiredCostMethod
/ us-gaap_SubsequentEventTypeAxis
= us-gaap_SubsequentEventMember
/ us-gaap_TitleOfIndividualAxis
= nhtc_GeorgeKBroadyMember
|
|
|
|
| Subsequent Event [Member] | Kin Y. Chung [Member] |
|
|
|
|
|
|
|
|
|
| Subsequent Events [Abstract] |
|
|
|
|
|
|
|
|
|
| Other Labor-related Expenses |
|
|
|
|
25,000us-gaap_OtherLaborRelatedExpenses
/ us-gaap_SubsequentEventTypeAxis
= us-gaap_SubsequentEventMember
/ us-gaap_TitleOfIndividualAxis
= nhtc_KinYChungMember
|
|
|
|
|
| Stock Issued During Period, Value, Restricted Stock Award, Gross |
|
|
|
|
$ 3,058us-gaap_StockIssuedDuringPeriodValueRestrictedStockAwardGross
/ us-gaap_SubsequentEventTypeAxis
= us-gaap_SubsequentEventMember
/ us-gaap_TitleOfIndividualAxis
= nhtc_KinYChungMember
|
|
|
|
|
| Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period |
|
|
|
|
3 years
|
|
|
|
|
| Restricted Stock [Member] | Subsequent Event [Member] |
|
|
|
|
|
|
|
|
|
| Subsequent Events [Abstract] |
|
|
|
|
|
|
|
|
|
| Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period |
|
|
|
|
|
|
3 years
|
|
|
| Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period |
|
|
|
|
|
|
60,960us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockMember
/ us-gaap_SubsequentEventTypeAxis
= us-gaap_SubsequentEventMember
|
|
|