XML 52 R41.htm IDEA: XBRL DOCUMENT v2.4.1.9
Geographical Data (Detail) (USD $)
In Thousands, unless otherwise specified
3 Months Ended 6 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2014
Dec. 31, 2013
Jun. 30, 2014
Revenues from External Customers and Long-Lived Assets [Line Items]          
Total Net Sales $ 19,571us-gaap_SalesRevenueNet [1] $ 18,353us-gaap_SalesRevenueNet [1] $ 36,907us-gaap_SalesRevenueNet [1] $ 35,592us-gaap_SalesRevenueNet [1]  
Total Identifiable Assets 61,680us-gaap_Assets   61,680us-gaap_Assets   63,364us-gaap_Assets
Domestic [Member]          
Revenues from External Customers and Long-Lived Assets [Line Items]          
Revenues 18,876us-gaap_Revenues
/ us-gaap_StatementGeographicalAxis
= nssc_DomesticMember
[1] 17,593us-gaap_Revenues
/ us-gaap_StatementGeographicalAxis
= nssc_DomesticMember
[1] 35,448us-gaap_Revenues
/ us-gaap_StatementGeographicalAxis
= nssc_DomesticMember
[1] 33,887us-gaap_Revenues
/ us-gaap_StatementGeographicalAxis
= nssc_DomesticMember
[1]  
Foreign [Member]          
Revenues from External Customers and Long-Lived Assets [Line Items]          
Revenues 695us-gaap_Revenues
/ us-gaap_StatementGeographicalAxis
= nssc_ForeignMember
[1] 760us-gaap_Revenues
/ us-gaap_StatementGeographicalAxis
= nssc_ForeignMember
[1] 1,459us-gaap_Revenues
/ us-gaap_StatementGeographicalAxis
= nssc_ForeignMember
[1] 1,705us-gaap_Revenues
/ us-gaap_StatementGeographicalAxis
= nssc_ForeignMember
[1]  
United States [Member]          
Revenues from External Customers and Long-Lived Assets [Line Items]          
Total Identifiable Assets 47,553us-gaap_Assets
/ us-gaap_StatementGeographicalAxis
= country_US
  47,553us-gaap_Assets
/ us-gaap_StatementGeographicalAxis
= country_US
  49,529us-gaap_Assets
/ us-gaap_StatementGeographicalAxis
= country_US
Dominican Republic [Member]          
Revenues from External Customers and Long-Lived Assets [Line Items]          
Total Identifiable Assets $ 14,127us-gaap_Assets
/ us-gaap_StatementGeographicalAxis
= country_DO
[2]   $ 14,127us-gaap_Assets
/ us-gaap_StatementGeographicalAxis
= country_DO
[2]   $ 13,835us-gaap_Assets
/ us-gaap_StatementGeographicalAxis
= country_DO
[2]
[1] All of the Company's sales originate in the United States and are shipped primarily from the Company's facilities in the United States. There were no sales into any one foreign country in excess of 10% of total Net Sales.
[2] Consists primarily of inventories (December 31, 2014 = $10,477; June 30, 2014 = $10,216) and fixed assets (December 31, 2014 = $3,425; June 30, 2014 = $3,475) located at the Company's principal manufacturing facility in the Dominican Republic.