Annual report pursuant to Section 13 and 15(d)

Note 4 - Dividend Activity (Details)

v2.4.1.9
Note 4 - Dividend Activity (Details) (USD $)
In Thousands, except Per Share data, unless otherwise specified
12 Months Ended
Dec. 31, 2014
Dividends Per Share, Preferred (in dollars per share) $ 0.894us-gaap_PreferredStockDividendsPerShareCashPaid
Dividends Per Share, Common (in dollars per share) $ 0.03us-gaap_CommonStockDividendsPerShareCashPaid
Amount $ 476us-gaap_Dividends
Dividends Declared July 29, 2014 [Member]  
Dividends Per Share, Preferred (in dollars per share) $ 0.027us-gaap_PreferredStockDividendsPerShareCashPaid
/ us-gaap_DividendsAxis
= nhtc_DividendsDeclaredJuly292014Member
Dividends Per Share, Common (in dollars per share) $ 0.01us-gaap_CommonStockDividendsPerShareCashPaid
/ us-gaap_DividendsAxis
= nhtc_DividendsDeclaredJuly292014Member
Amount 127us-gaap_Dividends
/ us-gaap_DividendsAxis
= nhtc_DividendsDeclaredJuly292014Member
Date Payable Aug. 27, 2014
Dividends Declared March 7, 2014 [Member]  
Dividends Per Share, Preferred (in dollars per share) $ 0.815us-gaap_PreferredStockDividendsPerShareCashPaid
/ us-gaap_DividendsAxis
= nhtc_DividendsDeclaredMarch72014Member
Dividends Per Share, Common (in dollars per share) $ 0.005us-gaap_CommonStockDividendsPerShareCashPaid
/ us-gaap_DividendsAxis
= nhtc_DividendsDeclaredMarch72014Member
Amount 159us-gaap_Dividends
/ us-gaap_DividendsAxis
= nhtc_DividendsDeclaredMarch72014Member
Date Payable Apr. 08, 2014
Dividends Declared May 6, 2014 [Member]  
Dividends Per Share, Preferred (in dollars per share) $ 0.02us-gaap_PreferredStockDividendsPerShareCashPaid
/ us-gaap_DividendsAxis
= nhtc_DividendsDeclaredMay62014Member
Dividends Per Share, Common (in dollars per share) $ 0.005us-gaap_CommonStockDividendsPerShareCashPaid
/ us-gaap_DividendsAxis
= nhtc_DividendsDeclaredMay62014Member
Amount 62us-gaap_Dividends
/ us-gaap_DividendsAxis
= nhtc_DividendsDeclaredMay62014Member
Date Payable Jun. 04, 2014
Dividends Declared November 4, 2014 [Member]  
Dividends Per Share, Preferred (in dollars per share) $ 0.032us-gaap_PreferredStockDividendsPerShareCashPaid
/ us-gaap_DividendsAxis
= nhtc_DividendsDeclaredNovember42014Member
Dividends Per Share, Common (in dollars per share) $ 0.01us-gaap_CommonStockDividendsPerShareCashPaid
/ us-gaap_DividendsAxis
= nhtc_DividendsDeclaredNovember42014Member
Amount $ 128us-gaap_Dividends
/ us-gaap_DividendsAxis
= nhtc_DividendsDeclaredNovember42014Member
Date Payable Dec. 03, 2014