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Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2021
Mar. 31, 2020
CASH FLOWS FROM OPERATING ACTIVITIES:    
Net (loss) income $ (1,210) $ 954
Adjustments to reconcile net cash used in operating activities:    
Depreciation and amortization expense 1,553 1,612
Deferred income taxes (5) 22
Change in fair value of interest rate swap agreements 5 138
Stock-based compensation 219 308
Allowance for doubtful accounts (218) 29
Common stock issued under defined contribution 401(k) plan 258
Gain on disposal of assets (23)
Changes in operating assets and liabilities, net of acquisition:    
Accounts receivable 1,229 2,037
Employee retention credit receivable (3,372)
Contract assets (269)
Inventories (13,552) (8,891)
Prepaid expenses and other current assets 699 (476)
Accounts payable 7,591 3,545
Accrued liabilities 419 (657)
Customer deposits (1,764) 305
Other non-current assets and liabilities 3 49
Net cash used in operating activities (8,437) (1,025)
CASH FLOWS FROM INVESTING ACTIVITIES:    
Purchases of property and equipment (612) (670)
Proceeds from disposals of property and equipment 23
Net cash used in investing activities (589) (670)
CASH FLOWS FROM FINANCING ACTIVITIES:    
Proceeds from line of credit 5,673 51,552
Payments on line of credit (2,450) (49,070)
Proceeds from long-term debt 595
Payments on long-term debt (150) (242)
Principal payments on finance leases (339) (218)
Shares withheld for taxes in connection with issuance of restricted stock (847)
Proceeds from sale of common stock, net 6,101
Net cash provided by financing activities 8,583 2,022
NET (DECREASE) INCREASE IN CASH (443) 327
CASH beginning of the period 3,372 2,416
CASH end of the period $ 2,929 $ 2,743