CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	3 Months Ended				6 Months Ended		12 Months Ended
	Jun. 30, 2021	Mar. 31, 2021	Jun. 30, 2020	Mar. 31, 2020	Jun. 30, 2021	Jun. 30, 2020	Dec. 31, 2020
OPERATING ACTIVITIES
Net income (loss)	$ 5,789	$ 3,067	$ (3,977)	$ (28,164)	$ 8,856	$ (32,141)
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Depreciation and amortization	5,765		6,061		11,723	12,295
Goodwill and other impairments	0		0		0	20,100	$ 20,100
Amortization of financing costs					876	878
Mark to market (gain) loss on interest rate derivatives	(46)		164		(544)	2,415
Non-cash lease expense					(768)	2,020
Provision for doubtful accounts					(146)	2,987
Stock compensation expense					2,772	2,746
Undistributed equity in (earnings) losses, net of taxes					(146)	509
Changes in operating assets and liabilities
Accounts receivable					49,943	12,661
Inventory					(14,305)	2,398
Prepaid expenses, other current assets and other assets					2,931	782
Accounts payable, accrued expenses and other liabilities					(12,516)	39,430
Income taxes receivable					(1,750)	(871)
Income taxes payable					(4,795)	0
NET CASH PROVIDED BY OPERATING ACTIVITIES					42,131	66,209
INVESTING ACTIVITIES
Purchases of property and equipment					(2,497)	(1,380)
Acquisition					(178)	0
NET CASH USED IN INVESTING ACTIVITIES					(2,675)	(1,380)
FINANCING ACTIVITIES
Proceeds from revolving credit facility					10,845	95,851
Repayments of revolving credit facility					(38,131)	(99,134)
Repayments of term loan					(10,478)	(7,583)
Payments for finance lease obligations					(43)	(50)
Payments of tax withholding for stock based compensation					(3,185)	(486)
Proceeds from the exercise of stock options					735	0
Cash dividends paid					(1,957)	(937)
NET CASH USED IN FINANCING ACTIVITIES					(42,214)	(12,339)
Effect of foreign exchange on cash					140	(323)
(DECREASE) INCREASE IN CASH AND CASH EQUIVALENTS					(2,618)	52,167
Cash and cash equivalents at beginning of period		$ 35,963		$ 11,370	35,963	11,370	11,370
CASH AND CASH EQUIVALENTS AT END OF PERIOD	$ 33,345		$ 63,537		$ 33,345	$ 63,537	$ 35,963