Quarterly report pursuant to Section 13 or 15(d)

Long-Term Debt (Details Textual)

v3.7.0.1
Long-Term Debt (Details Textual) - USD ($)
3 Months Ended
Apr. 01, 2017
Dec. 31, 2016
Debt Instrument [Line Items]    
Revolving line of credit $ 124,000,000 $ 140,000,000
Interest expense recognized 725,000  
Revolving Credit Facility [Member]    
Debt Instrument [Line Items]    
Credit facilities, maximum capacity 300,000,000  
Revolving line of credit 124,000,000 140,000,000
Additional credit available subject to pro forma compliance with debt covenant $ 176,000,000 $ 160,000,000
Interest rate in effect 2.32%