LONG-TERM DEBT AND CREDIT AGREEMENT Debt Disclosurre (Details) - USD ($) $ in Thousands						3 Months Ended
	Feb. 08, 2018	Dec. 15, 2017	Nov. 09, 2017	Mar. 14, 2017	Feb. 26, 2016	Mar. 31, 2018	Mar. 31, 2017	May 10, 2018	Dec. 31, 2017	Jun. 15, 2015
Debt Instrument, Periodic Payment, Principal						$ 4,411
Term Loan, net of unamortized debt issuance costs of $3,444 at June 30, 2017 and $4,042 at December 31, 2016						101,682			$ 102,751
Notes, net of unamortized original issue discount and debt issuance costs of $20,449 at June 30, 2017 and $23,413 at December 31, 2016, respectively						105,791			105,974
Other Long-term Debt						1,662			1,679
Total debt						209,135			210,404
Short-term debt						5,883			5,906
Long-term Debt						203,252			204,498
Line of Credit, Current						0
Interest Expense						5,359	$ 4,846
Convertible Debt Retired	2,000	2,000
Convertible Debt Issued	123,000,000									125,000,000
Extinguishment of Debt, Amount	$ 2,000	$ 2,000
Repayments of Debt	$ 1,700	$ 1,700
Convertible Notes unamortized issue discount and debt issuance costs						18,339
Long-term Debt, Maturities, Repayments of Principal in Year Two						5,890
Long-term Debt, Maturities, Repayments of Principal in Year Three						126,900
Long-term Debt, Maturities, Repayments of Principal in Year Four						89,160
Long-term Debt, Maturities, Repayments of Principal in Year Five						172
Long-term Debt, Maturities, Repayments of Principal after Year Five						941
Total debt						227,474
Other Debt Obligations [Member]
Debt Instrument, Periodic Payment, Principal						98
Short-term debt						133
Long-term Debt						1,529
Convertible Notes unamortized issue discount and debt issuance costs						0
Long-term Debt, Maturities, Repayments of Principal in Year Two						140
Long-term Debt, Maturities, Repayments of Principal in Year Three						150
Long-term Debt, Maturities, Repayments of Principal in Year Four						161
Long-term Debt, Maturities, Repayments of Principal in Year Five						172
Long-term Debt, Maturities, Repayments of Principal after Year Five						941
Total debt						1,662
Cerberus Business Finance LLC [Member]
Debt Instrument, Periodic Payment, Principal						4,313
Short-term debt						5,750
Long-term Debt						95,932
Convertible Notes unamortized issue discount and debt issuance costs						3,130
Long-term Debt, Maturities, Repayments of Principal in Year Two						5,750
Long-term Debt, Maturities, Repayments of Principal in Year Three						5,750
Long-term Debt, Maturities, Repayments of Principal in Year Four						88,999
Long-term Debt, Maturities, Repayments of Principal in Year Five						0
Long-term Debt, Maturities, Repayments of Principal after Year Five						0
Total debt						104,812
Convertible Debt [Member]
Debt Instrument, Periodic Payment, Principal						0
Short-term debt						0
Long-term Debt						105,791
Long-term Debt, Gross						121,000				$ 125,000
Debt Instrument, Interest Rate, Stated Percentage										2.00%
Interest Expense						2,200	2,100
Convertible Notes unamortized issue discount and debt issuance costs						15,209			17,026
Long-term Debt, Maturities, Repayments of Principal in Year Two						0
Long-term Debt, Maturities, Repayments of Principal in Year Three						121,000
Long-term Debt, Maturities, Repayments of Principal in Year Four						0
Long-term Debt, Maturities, Repayments of Principal in Year Five						0
Long-term Debt, Maturities, Repayments of Principal after Year Five						0
Total debt						121,000
Cerberus Business Finance LLC [Member]
Long-term Debt			$ 115,000
Debt Instrument, Collateral					We granted a security interest on substantially all of our assets to secure the obligations under the Credit Facility and the Term Loan.
Debt Instrument, Covenant Description				The Financing Agreement contains customary representations and warranties, covenants, mandatory prepayments, and events of default under which our payment obligations may be accelerated. On March 14, 2017 (the “Amendment No. 1 Effective Date”), we entered into an amendment (the “First Amendment”) to the Financing Agreement. The First Amendment modified the covenant requiring us to maintain a Leverage Ratio (defined to mean the ratio of (a) total funded indebtedness to (b) consolidated EBITDA) such that following the Amendment No. 1 Effective Date, we are required to maintain a Leverage Ratio of no greater than 3.50:1.00 for the four quarters ended March 31, 2017, 4.20:1.00 for the four quarters ended June 30, 2017, 4.75:1.00 for the four quarters ended September 30, 2017, 4.80:1.00 for the four quarters ended December 31, 2017, 4.40:1.00 for each of the four quarters ending March 31, 2018 through March 31, 2019, respectively, and thereafter declining over time from 3.50:1.00 to 2.50:1.00.
Line of Credit Facility, Interest Rate Description				Following the Amendment No. 1 Effective Date, interest accrues on outstanding borrowings under the credit facility and the term loan (each as defined in the Financing Agreement) at a rate of either the LIBOR Rate (as defined in the Financing Agreement) plus 7.25% or a Reference Rate (as defined in the Financing Agreement) plus 6.25%, at our option.
additional long term debt			15,000
Debt Instrument, Periodic Payment, Principal			200
Cerberus Business Finance LLC [Member] | Line of Credit [Member]
Line of Credit Facility, Maximum Borrowing Capacity			$ 10,000		$ 5,000
Cerberus Business Finance LLC [Member] | Long-term Debt [Member]
Unamortized Debt Issuance Expense						3,130			$ 3,499
Long-term Debt					$ 100,000
Debt Instrument, Payment Terms					We may prepay all or any portion of the Term Loan prior to its stated maturity, subject to the payment of certain fees based on the amount repaid. The Term Loan requires quarterly principal payments of $1.25 million, which commenced in June 2016. The Term Loan also requires us to use 50% of excess cash flow, as defined in the Financing Agreement, to repay outstanding principal of the loans under the Financing Agreement.
Interest Expense, Long-term Debt						$ 2,300	$ 1,900
Cerberus Business Finance LLC [Member] | Line of Credit [Member]
Line of Credit Facility, Maximum Borrowing Capacity					$ 5,000
Subsequent Event [Member] | Cerberus Business Finance LLC [Member]
additional long term debt								$ 35,000