Annual report pursuant to Section 13 and 15(d)

Segment Reporting (Details)

v2.4.1.9
Segment Reporting (Details) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Dec. 27, 2014
Dec. 28, 2013
Dec. 29, 2012
Net sales      
Net sales $ 227,673us-gaap_Revenues $ 205,267us-gaap_Revenues $ 204,367us-gaap_Revenues
Total assets      
Total assets 222,764us-gaap_Assets 213,478us-gaap_Assets 175,121us-gaap_Assets
Long-lived assets      
Long-lived assets 87,217us-gaap_NoncurrentAssets 84,422us-gaap_NoncurrentAssets 72,676us-gaap_NoncurrentAssets
Americas [Member]      
Net sales      
Net sales 112,515us-gaap_Revenues
/ us-gaap_StatementGeographicalAxis
= us-gaap_AmericasMember
101,690us-gaap_Revenues
/ us-gaap_StatementGeographicalAxis
= us-gaap_AmericasMember
104,987us-gaap_Revenues
/ us-gaap_StatementGeographicalAxis
= us-gaap_AmericasMember
Total assets      
Total assets 145,816us-gaap_Assets
/ us-gaap_StatementGeographicalAxis
= us-gaap_AmericasMember
138,828us-gaap_Assets
/ us-gaap_StatementGeographicalAxis
= us-gaap_AmericasMember
110,392us-gaap_Assets
/ us-gaap_StatementGeographicalAxis
= us-gaap_AmericasMember
Long-lived assets      
Long-lived assets 73,315us-gaap_NoncurrentAssets
/ us-gaap_StatementGeographicalAxis
= us-gaap_AmericasMember
70,479us-gaap_NoncurrentAssets
/ us-gaap_StatementGeographicalAxis
= us-gaap_AmericasMember
60,240us-gaap_NoncurrentAssets
/ us-gaap_StatementGeographicalAxis
= us-gaap_AmericasMember
EMEA [Member]      
Net sales      
Net sales 69,241us-gaap_Revenues
/ us-gaap_StatementGeographicalAxis
= us-gaap_EMEAMember
61,246us-gaap_Revenues
/ us-gaap_StatementGeographicalAxis
= us-gaap_EMEAMember
59,818us-gaap_Revenues
/ us-gaap_StatementGeographicalAxis
= us-gaap_EMEAMember
Total assets      
Total assets 59,439us-gaap_Assets
/ us-gaap_StatementGeographicalAxis
= us-gaap_EMEAMember
58,388us-gaap_Assets
/ us-gaap_StatementGeographicalAxis
= us-gaap_EMEAMember
50,054us-gaap_Assets
/ us-gaap_StatementGeographicalAxis
= us-gaap_EMEAMember
Long-lived assets      
Long-lived assets 9,233us-gaap_NoncurrentAssets
/ us-gaap_StatementGeographicalAxis
= us-gaap_EMEAMember
9,745us-gaap_NoncurrentAssets
/ us-gaap_StatementGeographicalAxis
= us-gaap_EMEAMember
8,085us-gaap_NoncurrentAssets
/ us-gaap_StatementGeographicalAxis
= us-gaap_EMEAMember
Asia/Pacific [Member]      
Net sales      
Net sales 45,917us-gaap_Revenues
/ us-gaap_StatementGeographicalAxis
= us-gaap_AsiaPacificMember
42,331us-gaap_Revenues
/ us-gaap_StatementGeographicalAxis
= us-gaap_AsiaPacificMember
39,562us-gaap_Revenues
/ us-gaap_StatementGeographicalAxis
= us-gaap_AsiaPacificMember
Total assets      
Total assets 17,509us-gaap_Assets
/ us-gaap_StatementGeographicalAxis
= us-gaap_AsiaPacificMember
16,262us-gaap_Assets
/ us-gaap_StatementGeographicalAxis
= us-gaap_AsiaPacificMember
14,675us-gaap_Assets
/ us-gaap_StatementGeographicalAxis
= us-gaap_AsiaPacificMember
Long-lived assets      
Long-lived assets $ 4,669us-gaap_NoncurrentAssets
/ us-gaap_StatementGeographicalAxis
= us-gaap_AsiaPacificMember
$ 4,198us-gaap_NoncurrentAssets
/ us-gaap_StatementGeographicalAxis
= us-gaap_AsiaPacificMember
$ 4,351us-gaap_NoncurrentAssets
/ us-gaap_StatementGeographicalAxis
= us-gaap_AsiaPacificMember