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CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Operating activities:      
Net (losses) earnings $ 11,888 $ 995 $ 8,207
Adjustments to reconcile net earnings to net cash provided by (used in) operating activities:      
Depreciation and amortization 19,797 18,573 16,641
Gains on sales of property (733) (1,859) (1,400)
Provision for doubtful accounts (6) (27) (12)
Stock-based compensation expense 854 643 478
Deferred income taxes (1,401) 6,389 2,085
Net change in fair value contracts (14) (9) 23
Gain on dissolution of AREC 0 0 (573)
Changes in assets and liabilities:      
Accounts receivable (37,984) (5,162) (8,373)
Accounts receivable/payable, affiliates (2) (5) (24)
Inventories 394 4,751 (3,628)
Income tax receivable 6,864 (10,719) (165)
Prepayments and other current assets 575 (1,401) (2)
Accounts payable 82,170 (61,116) 31,795
Accrued liabilities (692) 5,052 1,154
Other (684) (104) 693
Net cash provided (used in) by operating activities 81,026 (43,999) 46,899
Investing activities:      
Property and equipment additions (12,382) (5,008) (35,743)
Acquisitions 0 (20,200) (5,624)
Proceeds from property sales 2,286 4,515 3,680
Proceeds from dissolution of AREC 0 0 998
Insurance and state collateral (deposits) refunds 0 1,030 652
Net cash used in investing activities (10,096) (19,663) (36,037)
Financing activities:      
Borrowings under Credit Agreement 8,000 0 0
Repayments under Credit Agreement (8,000) 0 0
Principal repayments of finance lease obligations (4,367) (2,336) (1,697)
Payment for financed portion of VEX acquisition (10,000) 0 0
Net proceeds from sale of equity 2,830 0 0
Payment of contingent consideration liability 0 (111) 0
Dividends paid on common stock (4,141) (4,081) (3,976)
Net cash used in financing activities (15,678) (6,528) (5,673)
Increase (Decrease) in cash and cash equivalents, including restricted cash 55,252 (70,190) 5,189
Cash and cash equivalents, including restricted cash, at beginning of period 52,065 122,255 117,066
Cash and cash equivalents, including restricted cash, at end of period $ 107,317 $ 52,065 $ 122,255