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Consolidated Statements of Cash Flows - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Operating activities    
Net loss $ (37,462) $ (22,010)
Adjustments to reconcile net loss to net cash provided by operating activities:    
Loss (income) from discontinued operations 22,663 (1,075)
Impairments   19,074
Depreciation and amortization expense 18,405 16,922
Stock-based compensation expense 961 1,989
Amortization of debt issuance costs and debt discount 1,949 1,947
Deferred income tax (6,897) (9,167)
Other, net 302 (165)
Changes in operating assets and liabilities:    
Accounts receivable (5,523) (6,396)
Inventories (1,998) 2,826
Prepaid expenses and other assets (2,108) 619
Income taxes 2,644 (8,581)
Accounts payable 2,411 5,655
Accrued expenses 10,436 (456)
Deferred revenue and customer deposits 632 599
Other liabilities 655 1,671
Cash provided by operating activities - continuing operations 7,070 3,452
Cash used in operating activities -discontinued operations (3,550) (1,025)
Investing activities    
Acquisitions of plant, equipment and leasehold improvements (5,634) (7,263)
Cash used in investing activities - continuing operations (5,634) (7,263)
Cash used in investing activities - discontinued operations (220) (1,527)
Financing activities    
Dividends paid on common stock   (7,540)
Payments on capital leases (519)  
Taxes withheld and paid on stock-based compensation awards   (341)
Cash used in financing activities (519) (7,881)
Effect of exchange rates on cash (61) 494
Net decrease in cash and cash equivalents: (2,914) (13,750)
Cash and cash equivalents, beginning of period 23,205 36,955
Cash and cash equivalents, end of period 20,291 23,205
Supplemental disclosures of cash flow information    
Cash paid (refunded) during the period for: Interest 20,703 18,466
Cash paid (refunded) during the period for: Income tax (refunds) payments, net (657) 30
Capital lease obligations incurred for certain machinery and equipment 1,812  
Accounts payable for acquisition of plant, equipment and leasehold improvements $ 1,339 $ 400