XML 47 R37.htm IDEA: XBRL DOCUMENT v3.6.0.2
Restructuring (narrative) (detail) - USD ($)
 3 Months Ended 9 Months Ended
Dec. 31, 2016
Oct. 01, 2016
Jul. 02, 2016
Dec. 26, 2015
Sep. 26, 2015
Jun. 27, 2015
Dec. 31, 2016
Dec. 26, 2015
Restructuring Cost and Reserve [Line Items]                
Plant Restructuring $ 1,316,000 $ 277,000 $ 1,185,000 $ 9,624,000 $ 15,000 $ (81,000) $ 2,778,000 $ 9,558,000
NorthwestPlant2 [Member]                
Restructuring Cost and Reserve [Line Items]                
Plant Restructuring 1,316,000 277,000 1,185,000         10,302,000
Employee Severance [Member]                
Restructuring Cost and Reserve [Line Items]                
Plant Restructuring 1,261,000 112,000 127,000 104,000 $ 15,000 $ (81,000)    
Employee Severance [Member] | NorthwestPlant2 [Member]                
Restructuring Cost and Reserve [Line Items]                
Plant Restructuring 1,261,000 112,000 127,000         162,000
Other Restructuring [Member]                
Restructuring Cost and Reserve [Line Items]                
Plant Restructuring (7,000) 451,000 1,064,000 7,814,000        
Other Restructuring [Member] | NorthwestPlant2 [Member]                
Restructuring Cost and Reserve [Line Items]                
Plant Restructuring 7,000 237,000 33,000         5,075,000
Long Lived Asset Charges [Member]                
Restructuring Cost and Reserve [Line Items]                
Plant Restructuring 62,000 (286,000) (6,000) $ 1,706,000        
Long Lived Asset Charges [Member] | NorthwestPlant2 [Member]                
Restructuring Cost and Reserve [Line Items]                
Plant Restructuring $ 62,000 $ 402,000 $ 1,025,000         $ 5,065,000