Quarterly report pursuant to Section 13 or 15(d)

Fair Value of Financial Instruments (Details)

v3.4.0.3
Fair Value of Financial Instruments (Details) - USD ($)
Apr. 02, 2016
Jan. 02, 2016
Assets    
Asset measured at, fair value $ 42,028,000  
Recurring [Member]    
Assets    
Assets measured at fair value, Adjusted cost 43,724,000 $ 46,207,000
Assets measured at fair value, Unrealized gains 71,000 37,000
Assets measured at fair value, Unrealized losses (1,767,000) (2,070,000)
Asset measured at, fair value 42,028,000 44,174,000
Level 1 [Member] | Recurring [Member]    
Assets    
Assets measured at fair value, Adjusted cost 3,456,000 3,929,000
Assets measured at fair value, Unrealized gains 27,000 29,000
Assets measured at fair value, Unrealized losses (323,000) (274,000)
Asset measured at, fair value 3,160,000 3,684,000
Level 1 [Member] | Equity securities [Member] | Recurring [Member]    
Assets    
Assets measured at fair value, Adjusted cost 1,005,000 1,318,000
Assets measured at fair value, Unrealized gains 22,000 28,000
Assets measured at fair value, Unrealized losses (42,000) (36,000)
Asset measured at, fair value 985,000 1,310,000
Level 1 [Member] | Mutual funds [Member] | Recurring [Member]    
Assets    
Assets measured at fair value, Adjusted cost 2,451,000 2,611,000
Assets measured at fair value, Unrealized gains 5,000 1,000
Assets measured at fair value, Unrealized losses (281,000) (238,000)
Asset measured at, fair value 2,175,000 2,374,000
Level 2 [Member] | Recurring [Member]    
Assets    
Assets measured at fair value, Adjusted cost 40,268,000 42,278,000
Assets measured at fair value, Unrealized gains 44,000 8,000
Assets measured at fair value, Unrealized losses (1,444,000) (1,796,000)
Asset measured at, fair value 38,868,000 40,490,000
Liabilities    
Liabilities measured at fair value, Unrealized gains 0 0
Liabilities measured at fair value, Unrealized losses 0 0
Liabilities measured at fair value 21,000 17,000
Convertible Debt, Fair Value Disclosures 21,000 17,000
Level 2 [Member] | Phantom Share Units (PSUs) [Member] | Recurring [Member]    
Assets    
Liabilities Measured at Fair Value Adjusted Cost 21,000 17,000
Liabilities    
Liabilities measured at fair value, Unrealized gains 0 0
Liabilities measured at fair value, Unrealized losses 0 0
Liabilities measured at fair value 21,000 17,000
Level 2 [Member] | Corporate fixed income [Member] | Recurring [Member]    
Assets    
Assets measured at fair value, Adjusted cost 35,459,000 35,936,000
Assets measured at fair value, Unrealized gains 39,000 8,000
Assets measured at fair value, Unrealized losses (1,332,000) (1,682,000)
Asset measured at, fair value 34,166,000 34,262,000
Level 2 [Member] | Municipal bonds [Member] | Recurring [Member]    
Assets    
Assets measured at fair value, Adjusted cost 2,912,000 2,897,000
Assets measured at fair value, Unrealized gains 1,000 0
Assets measured at fair value, Unrealized losses (109,000) (94,000)
Asset measured at, fair value 2,804,000 2,803,000
Level 2 [Member] | Certificates of deposit [Member] | Recurring [Member]    
Assets    
Assets measured at fair value, Adjusted cost 1,422,000 2,947,000
Assets measured at fair value, Unrealized gains 0 0
Assets measured at fair value, Unrealized losses 0 0
Asset measured at, fair value 1,422,000 2,947,000
Level 2 [Member] | Asset backed securities [Member] | Recurring [Member]    
Assets    
Assets measured at fair value, Adjusted cost 475,000 498,000
Assets measured at fair value, Unrealized gains 4,000 0
Assets measured at fair value, Unrealized losses (3,000) (20,000)
Asset measured at, fair value $ 476,000 $ 478,000