XML 37 R27.htm IDEA: XBRL DOCUMENT v3.10.0.1
5. Employee Retirement Benefit Plans (Details) - USD ($)
$ in Thousands
1 Months Ended
Apr. 30, 2015
Jun. 29, 2018
Apr. 21, 2015
Pension Plan Settlement Agreement, Payment Schedule ten installments of $750 to the Pension Benefit Guaranty Corporation due annually on October 31.    
Pension Settlement Obligation, Interest Rate     7.00%
Supplemental Executive Retirement Plan      
Expected Future Benefit Payments, Next Twelve Months   $ 469