LONG-TERM DEBT AND CREDIT AGREEMENT Carrying Value of Long Term Debt (Details) - USD ($)					12 Months Ended
	May 13, 2019	Jan. 22, 2019	Dec. 15, 2017	Jun. 15, 2015	Dec. 31, 2020	Dec. 31, 2019	Nov. 09, 2017
Debt Instrument [Line Items]
Extinguishment of Debt, Amount	$ 74,000,000.0	$ 3,900,000	$ 2,000,000.0		$ 16,200,000
Adjustments to Additional Paid in Capital, Equity Component of Convertible Debt, Subsequent Adjustments	600,000
Gain (Loss) on Extinguishment of Debt	(2,900,000)
Long-term Debt, Maturities, Repayments of Principal in Next Twelve Months					4,941,000
Long-term Debt, Maturities, Repayments of Principal in Year Two					14,347,000
Long-term Debt, Maturities, Repayments of Principal in Year Three					190,236,000
Long-term Debt, Maturities, Repayments of Principal in Year Four					197,000
Long-term Debt, Maturities, Repayments of Principal in Year Five					212,000
Term Loan, net					198,629,000	$ 200,105,000
Convertible Notes Payable					0	28,187,000
Forgivable loans payable. Payroll Protection Program					7,800,000
Other Long-term Debt, Noncurrent					1,271,000	1,296,000
Total debt					210,279,000	229,588,000
Long-term Debt					202,759,000	199,034,000
Debt Instrument, Unamortized Discount (Premium) and Debt Issuance Costs, Net					2,579,000
Long-term Debt, Maturities, Repayments of Principal after Year Five					346,000
Short-term Debt, Fair Value					4,941,000	30,554,000
Debt Instrument, Discounted Repurchase Amount	982.5
Debt Instrument, Repurchased Face Amount				$ 1,000
Repayments of Debt	$ 72,700,000	$ 3,600,000	$ 1,700,000		14,700,000
Convertible Note Options Outstanding	28,867
Cerberus Business Finance LLC [Member]
Debt Instrument [Line Items]
Long-term Debt							$ 115,000,000.0
Long-term Debt [Member] | Cerberus Business Finance LLC [Member]
Debt Instrument [Line Items]
Unamortized Debt Issuance Expense					0	3,334,000
Cerberus Business Finance LLC [Member]
Debt Instrument [Line Items]
Long-term Debt, Maturities, Repayments of Principal in Next Twelve Months					4,781,000
Long-term Debt, Maturities, Repayments of Principal in Year Two					6,375,000
Long-term Debt, Maturities, Repayments of Principal in Year Three					190,052,000
Long-term Debt, Maturities, Repayments of Principal in Year Four					0
Long-term Debt, Maturities, Repayments of Principal in Year Five					0
Total debt					201,208,000
Long-term Debt					193,848,000
Debt Instrument, Unamortized Discount (Premium) and Debt Issuance Costs, Net					2,579,000
Long-term Debt, Maturities, Repayments of Principal after Year Five					0
Short-term Debt, Fair Value					4,781,000
Convertible Debt [Member]
Debt Instrument [Line Items]
Amortization of Debt Discount (Premium)					700,000	3,300,000
Adjustments to Additional Paid in Capital, Equity Component of Convertible Debt, Subsequent Adjustments				$ 28,300,000
Debt Instrument, Unamortized Discount (Premium) and Debt Issuance Costs, Net					0	$ 680,000
Other Debt Obligations [Member]
Debt Instrument [Line Items]
Long-term Debt, Maturities, Repayments of Principal in Next Twelve Months					160,000
Long-term Debt, Maturities, Repayments of Principal in Year Two					172,000
Long-term Debt, Maturities, Repayments of Principal in Year Three					184,000
Long-term Debt, Maturities, Repayments of Principal in Year Four					197,000
Long-term Debt, Maturities, Repayments of Principal in Year Five					212,000
Total debt					1,271,000
Long-term Debt					1,111,000
Debt Instrument, Unamortized Discount (Premium) and Debt Issuance Costs, Net					0
Long-term Debt, Maturities, Repayments of Principal after Year Five					346,000
Short-term Debt, Fair Value					160,000
Federal Home Loan Bank Advances
Debt Instrument [Line Items]
Long-term Debt, Maturities, Repayments of Principal in Next Twelve Months					0
Long-term Debt, Maturities, Repayments of Principal in Year Two					7,800,000
Long-term Debt, Maturities, Repayments of Principal in Year Three					0
Long-term Debt, Maturities, Repayments of Principal in Year Four					0
Long-term Debt, Maturities, Repayments of Principal in Year Five					0
Total debt					7,800,000
Long-term Debt					7,800,000
Debt Instrument, Unamortized Discount (Premium) and Debt Issuance Costs, Net					0
Long-term Debt, Maturities, Repayments of Principal after Year Five					0
Short-term Debt, Fair Value					$ 0