Annual report pursuant to Section 13 and 15(d)

Schedule II Valuation and Qualifying Accounts (Details)

v3.3.1.900
Schedule II Valuation and Qualifying Accounts (Details) - USD ($)
 12 Months Ended
Dec. 31, 2015
Jan. 03, 2015
Dec. 28, 2013
Allowance for Doubtful Accounts [Member]      
Valuation and Qualifying Accounts Disclosure [Line Items]      
Balance at Beginning of Period $ 1,115,000 $ 1,079,000 $ 1,313,000
Charged to (Reduction of) Cost and Expenses 104,000 667,000 (192,000)
Deductions (972,000) (631,000) (42,000)
Balance at End of Period 247,000 1,115,000 1,079,000
Allowance for Doubtful Accounts [Member] | Specialty Pipe And Tube, Inc. [Member]      
Valuation and Qualifying Accounts Disclosure [Line Items]      
Charged to (Reduction of) Cost and Expenses   76,000  
Allowance for Doubtful Accounts [Member] | Notes Receivable [Member] | Palmer of Texas [Member]      
Valuation and Qualifying Accounts Disclosure [Line Items]      
Charged to (Reduction of) Cost and Expenses   801,000  
Increase (Decrease) in Accounts Receivable 299,000    
Inventory Valuation Reserve [Member]      
Valuation and Qualifying Accounts Disclosure [Line Items]      
Balance at Beginning of Period 725,000 2,206,000 2,125,000
Charged to (Reduction of) Cost and Expenses 767,000 3,975,000 531,000
Deductions (810,000) (5,456,000) (450,000)
Balance at End of Period $ 682,000 725,000 $ 2,206,000
Inventory Valuation Reserve [Member] | Other Expense [Member]      
Valuation and Qualifying Accounts Disclosure [Line Items]      
Deductions   (4,813,000)  
Bristol Fab and Ram-fab [Member] | Inventory Valuation Reserve [Member]      
Valuation and Qualifying Accounts Disclosure [Line Items]      
Charged to (Reduction of) Cost and Expenses   $ 3,109,000