Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Operating activities
Net loss	$ (4,454)	$ (37,462)
Adjustments to reconcile net loss to net cash provided by operating activities:
Loss from discontinued operations	124	22,663
Depreciation and amortization expense	17,002	18,405
Stock-based compensation expense	250	961
Amortization of debt issuance costs and debt discount	1,960	1,949
Deferred income tax	1,147	(6,897)
Reclassification adjustment to foreign currency loss	1,329
Other, net	146	302
Changes in operating assets and liabilities:
Accounts receivable	(688)	(5,523)
Inventories	(10,410)	(1,998)
Prepaid expenses and other assets	(1,328)	(2,108)
Income taxes	1,369	2,644
Accounts payable	1,127	2,411
Accrued expenses	(4,395)	10,436
Deferred revenue and customer deposits	(446)	632
Other liabilities	232	655
Cash provided by operating activities - continuing operations	2,965	7,070
Cash used in operating activities -discontinued operations	(124)	(3,550)
Investing activities
Acquisitions of plant, equipment and leasehold improvements	(4,175)	(5,634)
Cash received from sale of Canadian subsidiary	1,451
Other	150
Cash used in investing activities - continuing operations	(2,574)	(5,634)
Cash used in investing activities - discontinued operations	0	(220)
Financing activities
Proceeds from revolving credit facility	11,500
Principal payment on revolving credit facility	(11,500)
Payments on financing leases	(1,926)	(519)
Cash used in financing activities	(1,926)	(519)
Effect of exchange rates on cash	50	(61)
Net decrease in cash and cash equivalents:	(1,609)	(2,914)
Cash and cash equivalents, beginning of period	20,291	23,205
Cash and cash equivalents, end of period	18,682	20,291
Supplemental disclosures of cash flow information
Cash paid (refunded) during the period for: Interest	23,036	20,703
Cash paid (refunded) during the period for: Income tax (refunds) payments, net	780	(657)
Right-of-use assets obtained in exchange for lease obligations- Operating leases	8,533
Right-of-use assets obtained in exchange for lease obligations- Financing leases	6,438	1,812
Accounts payable and accrued expenses for acquisitions of plant, equipment and leasehold improvements	$ 308	$ 1,339