Annual report pursuant to Section 13 and 15(d)

Long-term Debt (Details)

v2.4.1.9
Long-term Debt (Details) (USD $)
Jan. 03, 2015
Dec. 28, 2013
Nov. 21, 2014
Oct. 22, 2013
Oct. 22, 2012
Jun. 30, 2010
Aug. 21, 2012
Aug. 19, 2013
Aug. 09, 2013
Debt Instrument [Line Items]                  
Long-term debt $ 31,789,350us-gaap_LongTermDebt $ 23,438,616us-gaap_LongTermDebt              
Less current portion 4,533,908us-gaap_LongTermDebtCurrent 2,533,908us-gaap_LongTermDebtCurrent              
Long-term debt, less current portion 27,255,442us-gaap_LongTermDebtNoncurrent 20,904,708us-gaap_LongTermDebtNoncurrent              
Revolving Line of Credit Due November 21, 2017[Member]                  
Debt Instrument [Line Items]                  
Long-term debt 884,637us-gaap_LongTermDebt
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_RevolvingCreditFacilityMember
0us-gaap_LongTermDebt
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_RevolvingCreditFacilityMember
             
Line of credit, maximum borrowing capacity 40,000,000us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_RevolvingCreditFacilityMember
  40,000,000us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_RevolvingCreditFacilityMember
25,000,000us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_RevolvingCreditFacilityMember
30,000,000us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_RevolvingCreditFacilityMember
20,000,000us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_RevolvingCreditFacilityMember
     
Term Loan Due November 21, 2019 [Member]                  
Debt Instrument [Line Items]                  
Long-term debt 10,000,000us-gaap_LongTermDebt
/ us-gaap_LongtermDebtTypeAxis
= synl_TermLoanDueNovember212019Member
0us-gaap_LongTermDebt
/ us-gaap_LongtermDebtTypeAxis
= synl_TermLoanDueNovember212019Member
             
Term loan, original balance     10,000,000us-gaap_DebtInstrumentFaceAmount
/ us-gaap_LongtermDebtTypeAxis
= synl_TermLoanDueNovember212019Member
           
Term Loan Due August 21, 2022 [Member]                  
Debt Instrument [Line Items]                  
Long-term debt 17,250,000us-gaap_LongTermDebt
/ us-gaap_LongtermDebtTypeAxis
= synl_TermLoanDueAugust212022Member
19,500,000us-gaap_LongTermDebt
/ us-gaap_LongtermDebtTypeAxis
= synl_TermLoanDueAugust212022Member
             
Term loan, original balance             22,500,000us-gaap_DebtInstrumentFaceAmount
/ us-gaap_LongtermDebtTypeAxis
= synl_TermLoanDueAugust212022Member
   
Mortgage Due August 19, 2023 [Member]                  
Debt Instrument [Line Items]                  
Long-term debt 3,654,713us-gaap_LongTermDebt
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_MortgagesMember
3,938,616us-gaap_LongTermDebt
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_MortgagesMember
             
Term loan, original balance               $ 4,033,250us-gaap_DebtInstrumentFaceAmount
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_MortgagesMember
$ 4,033,250us-gaap_DebtInstrumentFaceAmount
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_MortgagesMember