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Condensed Statements of Cash Flows (USD $) In Thousands, unless otherwise specified | 6 Months Ended
--- | ---
Jun. 30, 2013 | Jun. 30, 2012
CASH FLOWS FROM OPERATING ACTIVITIES: |  |
Net income | $ 7,838 | $ 6,508
Adjustments to reconcile net income to net cash provided by operating activities: |  |
Depreciation and amortization | 8,674 | 7,584
Deferred taxes | 4,067 | 3,937
Stock based compensation | 598 | 686
Gain on extinguishment of liability | (223) | 0
Changes in current assets and liabilities: |  |
Trade accounts receivables | 374 | 1,070
Inventory | 306 | 236
Prepaid income taxes and prepaid expenses | (1,323) | (159)
Accounts payable and accrued liabilities | (1,479) | 358
Current income tax liability | 302 | 44
Deferred income | 285 | 90
NET CASH PROVIDED BY OPERATING ACTIVITIES | 19,419 | 20,354
CASH FLOWS FROM INVESTING ACTIVITIES: |  |
Purchase of property and equipment | (18,429) | (6,319)
NET CASH USED IN INVESTING ACTIVITIES | (18,429) | (6,319)
CASH FLOWS FROM FINANCING ACTIVITIES: |  |
Proceeds from other long-term liabilities, net | (64) | (10)
Repayments of line of credit | (50) | 0
Proceeds from exercise of stock options | 368 | 57
NET CASH PROVIDED BY FINANCING ACTIVITIES | 254 | 47
NET CHANGE IN CASH AND CASH EQUIVALENTS | 1,244 | 14,082
CASH AND CASH EQUIVALENTS AT BEGINNING OF PERIOD | 28,086 | 16,390
CASH AND CASH EQUIVALENTS AT END OF PERIOD | 29,330 | 30,472
SUPPLEMENTAL DISCLOSURE OF CASH FLOW INFORMATION: |  |
Interest paid | 42 | 6
Income taxes paid | 1,801 | 1
NON-CASH TRANSACTIONS |  |
Transfer of rental equipment to inventory | $ 57 | $ 8,690

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