LONG-TERM DEBT AND CREDIT AGREEMENT Debt Disclosurre (Details) - USD ($)					3 Months Ended		9 Months Ended
	Jan. 05, 2021	Jun. 28, 2019	May 02, 2019	May 10, 2018	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020	Dec. 31, 2020	Apr. 08, 2019	Feb. 26, 2016
Other long-term debt					$ 1,087,000		$ 1,087,000
Total debt					172,149,000		172,149,000		$ 207,700,000
Less: current portion					9,159,000		9,159,000		4,941,000
Total long-term debt					162,990,000		162,990,000		202,759,000
Debt Issuance Costs Incurred During Noncash or Partial Noncash Transaction							2,574,000	$ 289,000
Interest Expense					1,646,000	$ 4,566,000	5,547,000	15,437,000
Loss (Gain) on Extinguishment of Debt	$ 3,700,000						2,579,000	0
Convertible Notes unamortized issue discount and debt issuance costs					2,188,000		2,188,000
Long-term Debt, Maturities, Repayments of Principal in Year Two					9,162,000		9,162,000
Long-term Debt, Maturities, Repayments of Principal in Year Three					13,674,000		13,674,000
Long-term Debt, Maturities, Repayments of Principal in Year Four					18,186,000		18,186,000
Long-term Debt, Maturities, Repayments of Principal in Year Five					18,200,000		18,200,000
Long-term Debt, Maturities, Repayments of Principal after Year Five					112,826,000		112,826,000
Repayments of Lines of Credit							0	22,000,000
Write off of Deferred Debt Issuance Cost	2,600,000
Unwind capped call cash receipt	$ 1,100,000						1,169,000	$ 0
Term Loan
Debt Instrument, LIBOR Floor Rate	0.25%
Term Loan | Debt Instrument, Principal Payment Period One
Debt Instrument, Periodic Payment, Principal, Percent	5.00%
Term Loan | Debt Instrument, Principal Payment Period Two
Debt Instrument, Periodic Payment, Principal, Percent	7.50%
Term Loan | Debt Instrument, Principal Payment Period Three
Debt Instrument, Periodic Payment, Principal, Percent	10.00%
London Interbank Offered Rate (LIBOR) [Member] | Term Loan
Debt Instrument, Basis Spread on Variable Rate	3.00%
London Interbank Offered Rate (LIBOR) [Member] | Minimum [Member] | Term Loan
Debt Instrument, Basis Spread on Variable Rate	2.00%
London Interbank Offered Rate (LIBOR) [Member] | Maximum [Member] | Term Loan
Debt Instrument, Basis Spread on Variable Rate	3.25%
Revolving Credit Facility [Member]
Less: current portion					9,000,000		9,000,000
Total long-term debt					162,062,000		162,062,000
Convertible Notes unamortized issue discount and debt issuance costs					2,188,000		2,188,000
Long-term Debt, Maturities, Repayments of Principal in Year Two					9,000,000		9,000,000
Long-term Debt, Maturities, Repayments of Principal in Year Three					13,500,000		13,500,000
Long-term Debt, Maturities, Repayments of Principal in Year Four					18,000,000		18,000,000
Long-term Debt, Maturities, Repayments of Principal in Year Five					18,000,000		18,000,000
Long-term Debt, Maturities, Repayments of Principal after Year Five					112,500,000		112,500,000
Other Debt Obligations [Member]
Less: current portion					159,000		159,000
Total long-term debt					928,000		928,000
Convertible Notes unamortized issue discount and debt issuance costs					0		0
Long-term Debt, Maturities, Repayments of Principal in Year Two					162,000		162,000
Long-term Debt, Maturities, Repayments of Principal in Year Three					174,000		174,000
Long-term Debt, Maturities, Repayments of Principal in Year Four					186,000		186,000
Long-term Debt, Maturities, Repayments of Principal in Year Five					200,000		200,000
Long-term Debt, Maturities, Repayments of Principal after Year Five					326,000		326,000
Convertible Debt [Member]
Convertible Notes unamortized issue discount and debt issuance costs					0		0		680,000
Federal Home Loan Bank Advances [Member]
PPP loan					0		0
Cerberus Business Finance LLC [Member]
Proceeds from Loans				$ 22,500,000
Cerberus Business Finance LLC [Member] | Line of Credit [Member]
Repayments of Lines of Credit	$ 201,000,000
Cerberus Business Finance LLC [Member] | Long-term Debt [Member]
Unamortized Debt Issuance Expense					2,188,000		2,188,000		$ 3,334,000
Interest Expense, Long-term Debt					1,300,000		4,100,000
Convertible Notes unamortized issue discount and debt issuance costs					$ 2,500,000		$ 2,500,000
Term Loan, Net, Period Increase (Decrease)				22,700,000
Cerberus Business Finance LLC [Member] | Long-term Debt [Member] | Delayed Draw Funds
Total long-term debt		$ 79,300,000								$ 100,000,000
Repayments of Long-term Debt		$ 20,700,000
Cerberus Business Finance LLC [Member] | Line of Credit [Member]
Debt Instrument, Restrictive Covenant, Excess Cash Flow Payment Requirement, As A Percentage											50.00%
Line of Credit Facility, Increase (Decrease), Net				$ 12,500,000
JPMorgan Chase | Term Loan
Line of Credit Facility, Maximum Borrowing Capacity	180,000,000
JPMorgan Chase | Revolving Credit Facility [Member]
Line of Credit Facility, Maximum Borrowing Capacity	$ 70,000,000
JPMorgan Chase | Line of Credit [Member]
Line Of Credit Facility, Covenant Terms, Maximum Net Leverage Ratio	4.00
Line Of Credit Facility, Covenant Terms, Minimum Fixed Charge Ratio	1.20
Convertible Debt [Member]
Repayments of Senior Debt			$ 72,700,000
Interest Expense			600,000
Payments of Financing Costs			$ 6,000,000