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CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($)
$ in Thousands
 3 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Cash flows from operating activities    
Net income $ 2,713 $ 2,710
Adjustments for:    
Depreciation and amortization 7,621 6,613
Stock-based compensation expense 2,451 2,311
Loss (gain) on disposal of property and equipment 356 (2,368)
Amortization of deferred financing costs 66 35
Changes in working capital:    
Accounts receivable, net (5,593) (1,878)
Inventory (136) (190)
Prepaid expenses and other assets 389 (601)
Trade payables 1,582 1,176
Deferred revenue (41) 101
Accrued liabilities (2,602) (3,050)
Income tax payable/receivable 1,265 (2,005)
Net cash provided by operating activities 8,071 2,854
Cash flows from investing activities    
Purchase of property and equipment (6,712) (15,483)
Proceeds from sale of property and equipment 1,227 6,953
Net cash used in investing activities (5,485) (8,530)
Cash flows from financing activities    
Proceeds from exercise of options 526 11
Principal payments on term notes (3,242) (113)
Shares redeemed to pay income tax (1,996) (1,584)
Payments for share repurchase programs (1,439) 0
Repayments of finance lease liabilities 0 (18)
Distributions to non-controlling interest (174) 0
Net cash used in financing activities (6,325) (1,704)
Net decrease in cash and cash equivalents (3,739) (7,380)
Cash and cash equivalents at beginning of year 13,501 17,540
Cash and cash equivalents at end of period 9,762 10,160
Supplemental disclosures of cash flow information    
Cash paid during the period for interest 226 125
Cash paid during the period for income taxes, net of refunds 14 2,957
Supplemental disclosures of non-cash transactions    
Equipment and other fixed asset purchases payable at end of period 2,881 3,625
Equipment sales receivable at end of period $ 0 $ 3,832