LONG TERM DEBT (Details) - USD ($) $ in Thousands			12 Months Ended
	Jun. 01, 2017	Feb. 01, 2016	Dec. 31, 2017	Dec. 31, 2016	May 07, 2014
Debt Instrument [Line Items]
Term loan quarterly payment			$ 8,750
Maturity date			May 07, 2019
Term loan interest rate			3.07%
Undrawn revolving loan			$ 100,000
Maturities of Long-term Debt [Abstract]
Less current portion of long-term debt			35,000	$ 35,000
Total long-term debt			183,964	226,490
Capitalized costs net of accumulated amortization			536
Amortization expense pertaining to capitalized costs			474	$ 526
Term Loan [Member]
Debt Instrument [Line Items]
Maximum borrowing capacity					$ 350,000
Maturities of Long-term Debt [Abstract]
2018			35,000
2019			184,500
Future principle payments			219,500
Less unamortized debt financing costs			536
Less current portion of long-term debt			35,000
Total long-term debt			183,964
Revolving Loan [Member]
Debt Instrument [Line Items]
Maximum borrowing capacity					$ 100,000
Maturities of Long-term Debt [Abstract]
2018			0
2019			0
Future principle payments			0
Less unamortized debt financing costs			0
Less current portion of long-term debt			0
Total long-term debt			0
Revolving Loan [Member] | Albion International, Inc [Member]
Debt Instrument [Line Items]
Revolving loan used for funding of acquisition		$ 65,000
Revolving Loan [Member] | Innovative Food Processors, Inc [Member]
Debt Instrument [Line Items]
Revolving loan used for funding of acquisition	$ 20,000
Total Debt [Member]
Maturities of Long-term Debt [Abstract]
2018			35,000
2019			184,500
Future principle payments			219,500
Less unamortized debt financing costs			536
Less current portion of long-term debt			35,000
Total long-term debt			$ 183,964