Quarterly report pursuant to Section 13 or 15(d)

New Accounting Standards (Adoption of New Accounting Standard) (Details)

v3.10.0.1
New Accounting Standards (Adoption of New Accounting Standard) (Details) - USD ($)
$ in Thousands
Dec. 29, 2018
Sep. 30, 2018
Sep. 29, 2018
New Accounting Pronouncements or Change in Accounting Principle [Line Items]      
Accounts receivable, net $ 52,952   $ 46,537
Prepaid expenses and other current assets 3,602   2,962
Total Current Assets 248,738   225,422
Total assets 377,329   343,609
Accrued expenses 18,811   16,742
Total current liabilities 94,915   75,811
Liabilities 231,974   193,491
Retained earnings 127,539   128,695
Total liabilities and equity $ 377,329   $ 343,609
Effect of standard | Effect of standard      
New Accounting Pronouncements or Change in Accounting Principle [Line Items]      
Accounts receivable, net   $ (1,119)  
Prepaid expenses and other current assets   (160)  
Total Current Assets   (1,279)  
Total assets   (1,279)  
Accrued expenses   (1,500)  
Total current liabilities   (1,500)  
Liabilities   (1,500)  
Total liabilities and equity   (1,500)  
Balances without Adoption      
New Accounting Pronouncements or Change in Accounting Principle [Line Items]      
Accounts receivable, net   51,833  
Prepaid expenses and other current assets   3,442  
Total Current Assets   247,459  
Total assets   376,050  
Accrued expenses   17,311  
Total current liabilities   93,415  
Liabilities   230,474  
Total liabilities and equity   $ 375,829