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Consolidated Statements of Cash Flows - USD ($)
$ in Thousands
9 Months Ended
Sep. 30, 2020
Sep. 30, 2019
Cash flows from operating activities    
Net income (loss) $ 16,554 $ (5,518)
Adjustments to reconcile net income (loss) to net cash used in operating activities:    
Depreciation and amortization 18,175 19,609
Amortization of ROU operating leases 4,449 4,145
Amortization of ROU finance leases 2,487 1,733
Unamortized debt issuance costs upon debt modification   399
Amortization of deferred debt issuance costs 529 312
Deferred income taxes 27 44
Stock-based compensation 1,887 2,292
Gain on disposal of assets, net (7,734) (1,197)
Allowance for credit losses (487)  
Change in operating assets and liabilities:    
Accounts receivable 12,151 (35,242)
Income tax receivable   (330)
Inventory (291) 310
Prepaid expenses and other 1,667 1,674
Costs and estimated earnings in excess of billings on uncompleted contracts (1,807) (29,063)
Accounts payable (22,583) 13,702
Accrued liabilities 26,282 1,660
Operating lease liabilities (4,079) (4,434)
Income tax payable (1,037) 755
Billings in excess of costs and estimated earnings on uncompleted contracts (7,814) 27,252
Net cash provided by (used in) operating activities 38,376 (1,897)
Cash flows from investing activities:    
Proceeds from sale of property and equipment 5,821 1,363
Purchase of property and equipment (9,444) (13,035)
Contributions to CSV life insurance (99) (550)
Insurance claim proceeds related to property and equipment 1,525 2,574
Net cash used in investing activities (2,197) (9,648)
Cash flows from financing activities:    
Borrowings from Credit Facility 10,000 49,000
Payments made on borrowings from Credit Facility (41,225) (59,460)
Proceeds from sale-leaseback arrangement   18,210
Loan costs from Credit Facility (369) (1,430)
Payments of finance lease liabilities (2,751) (2,144)
Purchase of vested stock-based awards (188)  
Exercise of stock options   35
Net cash (used in) provided by financing activities (34,533) 4,211
Net change in cash and cash equivalents 1,646 (7,334)
Cash and cash equivalents at beginning of period 1,086 8,684
Cash and cash equivalents at end of period 2,732 1,350
Supplemental disclosures of cash flow information, cash paid during the period for:    
Interest 2,676 5,202
Taxes, net of refunds $ 2,500 $ 444