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, 2019	Dec. 31, 2018	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					31,234,000
Long-term Debt, Maturities, Repayments of Principal in Year Two					4,927,000
Long-term Debt, Maturities, Repayments of Principal in Year Three					6,532,000
Long-term Debt, Maturities, Repayments of Principal in Year Four					190,220,000
Long-term Debt, Maturities, Repayments of Principal in Year Five					180,000
Term Loan, net					200,105,000	$ 122,811,000
Convertible Notes Payable					28,187,000	97,731,000
Line of Credit, Current					0
Other Long-term Debt, Noncurrent					1,296,000	1,453,000
Total debt					233,602,000	221,995,000
Long-term Debt					199,034,000	220,590,000
Debt Instrument, Unamortized Discount (Premium) and Debt Issuance Costs, Net					4,014,000
Long-term Debt, Maturities, Repayments of Principal after Year Five					509,000
Short-term Debt, Fair Value					30,554,000	1,405,000
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					3,334,000	2,613,000
Cerberus Business Finance LLC [Member]
Debt Instrument [Line Items]
Long-term Debt, Maturities, Repayments of Principal in Next Twelve Months					2,231,000
Long-term Debt, Maturities, Repayments of Principal in Year Two					4,781,000
Long-term Debt, Maturities, Repayments of Principal in Year Three					6,375,000
Long-term Debt, Maturities, Repayments of Principal in Year Four					190,052,000
Long-term Debt, Maturities, Repayments of Principal in Year Five					0
Total debt					203,439,000
Long-term Debt					197,874,000
Debt Instrument, Unamortized Discount (Premium) and Debt Issuance Costs, Net					3,334,000
Long-term Debt, Maturities, Repayments of Principal after Year Five					0
Short-term Debt, Fair Value					2,231,000
Convertible Debt [Member]
Debt Instrument [Line Items]
Amortization of Debt Discount (Premium)					3,300,000	6,400,000
Adjustments to Additional Paid in Capital, Equity Component of Convertible Debt, Subsequent Adjustments				$ 28,300,000
Long-term Debt, Maturities, Repayments of Principal in Next Twelve Months					28,867,000
Long-term Debt, Maturities, Repayments of Principal in Year Two					0
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					28,867,000
Long-term Debt					0
Debt Instrument, Unamortized Discount (Premium) and Debt Issuance Costs, Net					680,000	$ 9,022,000
Long-term Debt, Maturities, Repayments of Principal after Year Five					0
Short-term Debt, Fair Value					28,187,000
Other Debt Obligations [Member]
Debt Instrument [Line Items]
Long-term Debt, Maturities, Repayments of Principal in Next Twelve Months					136,000
Long-term Debt, Maturities, Repayments of Principal in Year Two					146,000
Long-term Debt, Maturities, Repayments of Principal in Year Three					157,000
Long-term Debt, Maturities, Repayments of Principal in Year Four					168,000
Long-term Debt, Maturities, Repayments of Principal in Year Five					180,000
Total debt					1,296,000
Long-term Debt					1,160,000
Debt Instrument, Unamortized Discount (Premium) and Debt Issuance Costs, Net					0
Long-term Debt, Maturities, Repayments of Principal after Year Five					509,000
Short-term Debt, Fair Value					$ 136,000