XML 62 R60.htm IDEA: XBRL DOCUMENT v2.4.1.9
Note 13 - Segment and Geographical Information - Net Revenue Based on the Ship-to Location (Details) (USD $)
In Thousands, unless otherwise specified
 3 Months Ended
May 02, 2015
May 03, 2014
Net revenue $ 55,912us-gaap_SalesRevenueNet $ 36,873us-gaap_SalesRevenueNet
Asia [Member]    
Net revenue 39,669us-gaap_SalesRevenueNet
/ us-gaap_StatementGeographicalAxis
= us-gaap_AsiaMember		 29,246us-gaap_SalesRevenueNet
/ us-gaap_StatementGeographicalAxis
= us-gaap_AsiaMember
North America [Member]    
Net revenue 12,153us-gaap_SalesRevenueNet
/ us-gaap_StatementGeographicalAxis
= us-gaap_NorthAmericaMember		 4,336us-gaap_SalesRevenueNet
/ us-gaap_StatementGeographicalAxis
= us-gaap_NorthAmericaMember
Europe [Member]    
Net revenue 2,765us-gaap_SalesRevenueNet
/ us-gaap_StatementGeographicalAxis
= us-gaap_EuropeMember		 2,302us-gaap_SalesRevenueNet
/ us-gaap_StatementGeographicalAxis
= us-gaap_EuropeMember
Other Regions [Member]    
Net revenue $ 1,325us-gaap_SalesRevenueNet
/ us-gaap_StatementGeographicalAxis
= sigm_OtherRegionsMember		 $ 989us-gaap_SalesRevenueNet
/ us-gaap_StatementGeographicalAxis
= sigm_OtherRegionsMember