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LONG-TERM DEBT Term Loan Agreement (Details)	Feb. 04, 2013 USD ($) extension	Dec. 31, 2017 USD ($)	Jan. 01, 2017 USD ($)
Debt Instrument [Line Items]
Total		$ 118,756,000	$ 137,629,000
Synovus Bank
Debt Instrument [Line Items]
Debt Instrument, face amount	$ 34,000,000.0
Debt Instrument, term	5 years
Debt Instrument, periodic payment, principal	$ 2,300,000
Debt Instrument, amortization term	15 years
Term Loan, interest rate description	one-month
Debt Instrument, number of extensions available to company | extension	5
Debt Instrument, extension period	1 year
Debt Instrument, interest rate at period end		2.86%
Total		$ 22,856,000	25,122,000
Long-term debt, current maturities		$ 2,267,000	$ 2,267,000
Synovus Bank | London Interbank Offered Rate (LIBOR)
Debt Instrument [Line Items]
Debt Instrument, basis spread on variable rate	1.50%

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Debt Instrument, Amortization Term

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Face (par) amount of debt instrument at time of issuance.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 30
-Section 55
-Paragraph 8
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Effective interest rate for the funds borrowed under the debt agreement considering interest compounding and original issue discount or premium.

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-Name Accounting Standards Codification
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-SubTopic 10
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Period of time between issuance and maturity of debt instrument, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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