LONG-TERM DEBT (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Borrowings [Abstract]
Less unamortized debt issuance costs	$ (2,046)	$ (2,714)
Total Debt	349,509	408,802
Less: Current maturities	(50,829)	(38,608)
Total Long-term Debt	298,680	370,194
Computation of the Leverage Ratio [Abstract]
Loss before taxes	(38,920)	(25,556)	$ 94,717
Loss attributable to noncontrolling interest	813
Interest expense	10,932	12,797	6,282
Depreciation and amortization	33,243
Impairment expense	68,735	117,569	0
Stock compensation expense	2,973
Pro forma acquisition EBITDA	2,244
B27 settlement	7,348	0	0
(A) Defined EBITDA	87,368
Total long-term debt, including current maturities	349,509	408,802
Less unamortized debt issuance costs	2,046	2,714
(B) Defined indebtedness	$ 351,555
Leverage Ratio (B)/(A)	4.02
Computation of Fixed Charge Coverage Ratio [Abstract]
Defined EBITDA	$ 87,368
Cash paid for income taxes	13,792	28,784	35,697
Capital expenditures	13,992
(A) Defined EBITDA minus capital expenditures & cash income taxes	59,584
Cash interest payments	9,721	11,641	5,489
Dividends	90	90	$ 90
Scheduled principal payments	38,666
(B) Fixed Charges	$ 48,477
Fixed Charge Coverage Ratio (A)/(B)	1.23
Computation of the Asset Coverage Ratio [Abstract]
Credit facility outstanding balance	$ 349,509	408,802
Defined indebtedness	$ 178,452
Percentage of net accounts receivable for calculating asset coverage ratio	85.00%
Accounts receivable (net), valued at 85% of gross	$ 138,486
Percentage of net inventory for calculating asset coverage ratio	65.00%
Inventory, valued at 65% of gross	$ 67,482
Gross amount utilized for computation of asset coverage ratio	$ 205,968
Asset Coverage Ratio	1.15
Long-term Debt, Fiscal Year Maturity [Abstract]
2016	$ 50,829
2017	63,356
2018	63,381
2019	173,055
2020	934
Thereafter	$ 0
Minimum [Member]
Borrowings [Abstract]
Minimum asset coverage ratio	1.00
Consolidated Fixed Charge Coverage Ratio Covenant [Abstract]
June 30, 2015 through December 31, 2016	1.15
March 31, 2017 and thereafter	1.25
Asset coverage ratio current	1.23
Maximum [Member]
Consolidated Leverage Ratio Covenant [Abstract]
Through September 30, 2016	4.25
December 31, 2016	4.00
March 31, 2017 through June 30, 2017	3.75
September 30, 2017 through December 31, 2017	3.50
March 31, 2018 and thereafter	3.25
Consolidated leverage ratio current	4.02
Consolidated Fixed Charge Coverage Ratio Covenant [Abstract]
June 30, 2015 through December 31, 2016	1.15
March 31, 2017 and thereafter	1.25
Line of Credit [Member]
Borrowings [Abstract]
Total Debt	$ 172,147	193,443
Computation of the Leverage Ratio [Abstract]
Total long-term debt, including current maturities	172,147	193,443
Computation of the Asset Coverage Ratio [Abstract]
Credit facility outstanding balance	172,147	193,443
Outstanding letters of credit	6,305
Term Loan [Member]
Borrowings [Abstract]
Total Debt	175,000	212,500
Computation of the Leverage Ratio [Abstract]
Total long-term debt, including current maturities	175,000	212,500
Computation of the Asset Coverage Ratio [Abstract]
Credit facility outstanding balance	175,000	212,500
Promissory Note Payable [Member]
Borrowings [Abstract]
Total Debt	$ 4,408	5,216
Monthly installments	2.90%
Computation of the Leverage Ratio [Abstract]
Total long-term debt, including current maturities	$ 4,408	5,216
Computation of the Asset Coverage Ratio [Abstract]
Credit facility outstanding balance	4,408	5,216
Unsecured Subordinated Notes Payable [Member]
Borrowings [Abstract]
Less unamortized debt issuance costs	(2,046)	(2,714)
Total Debt	$ 0	357
Quarterly installments	5.00%
Computation of the Leverage Ratio [Abstract]
Total long-term debt, including current maturities	$ 0	357
Less unamortized debt issuance costs	2,046	2,714
Computation of the Asset Coverage Ratio [Abstract]
Credit facility outstanding balance	0	$ 357
Wells Fargo Bank, National Association [Member] | Term Loan [Member]
Borrowings [Abstract]
Maximum borrowing capacity	175,000
Wells Fargo Bank, National Association [Member] | Revolving Credit Facility [Member]
Borrowings [Abstract]
Maximum borrowing capacity	$ 350,000
Commitment fee	0.40%
Amount outstanding	$ 347,100
Available for borrowing under the facility	$ 19,800
Expiration date	Jan. 02, 2019
Wells Fargo Bank, National Association [Member] | Revolving Credit Facility [Member] | Minimum [Member]
Borrowings [Abstract]
Commitment fee	0.20%
Wells Fargo Bank, National Association [Member] | Revolving Credit Facility [Member] | Maximum [Member]
Borrowings [Abstract]
Commitment fee	0.50%
Wells Fargo Bank, National Association [Member] | Revolving Credit Facility [Member] | LIBOR [Member]
Borrowings [Abstract]
Basis spread on base rate	2.25%
Weighted average interest rate	2.67%
Wells Fargo Bank, National Association [Member] | Revolving Credit Facility [Member] | LIBOR or CDOR [Member] | Minimum [Member]
Borrowings [Abstract]
Basis spread on base rate	1.25%
Wells Fargo Bank, National Association [Member] | Revolving Credit Facility [Member] | LIBOR or CDOR [Member] | Maximum [Member]
Borrowings [Abstract]
Basis spread on base rate	2.75%
Wells Fargo Bank, National Association [Member] | Revolving Credit Facility [Member] | Prime rate [Member]
Borrowings [Abstract]
Basis spread on base rate	1.25%
Wells Fargo Bank, National Association [Member] | Revolving Credit Facility [Member] | Prime rate [Member] | Minimum [Member]
Borrowings [Abstract]
Basis spread on base rate	0.25%
Wells Fargo Bank, National Association [Member] | Revolving Credit Facility [Member] | Prime rate [Member] | Maximum [Member]
Borrowings [Abstract]
Basis spread on base rate	1.75%