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CONDENSED CONSOLIDATED 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 | $ 8,922 | $ 9,220
Adjustments to reconcile net income to net cash provided by operating activities: |  |
Depreciation, depletion, amortization and accretion on discounted liabilities | 11,152 | 13,962
Gain on sale of properties | (1,759) | (706)
Unrealized gain on derivative instruments, net | (2,397) | (5,098)
Provision for deferred income taxes | 4,374 | 4,215
Changes in assets and liabilities: |  |
Increase in accounts receivable | (4,707) | (3,533)
Decrease in other assets | 93 | 5,037
Increase (decrease) in accounts payable | (1,091) | 1,834
Increase in accrued liabilities | 2,239 | 863
Increase in due to related parties | 49 | 287
Net Cash Provided by Operating Activities | 16,875 | 26,081
Cash Flows from Investing Activities: |  |
Capital expenditures, including exploration expense | (14,815) | (51,714)
Proceeds from sale of property and equipment | 2,147 | 845
Net Cash Used in Investing Activities | (12,668) | (50,869)
Cash Flows from Financing Activities: |  |
Purchase of stock for treasury | (2,734) | (1,935)
Purchase of non-controlling interests | (7) | (47)
Proceeds in long-term bank debt and other long-term obligations | 27,250 | 62,000
Repayment of long-term bank debt and other long-term obligations | (28,000) | (34,307)
Distribution to non-controlling interests | (39) | (867)
Net Cash Provided by (Used in) in Financing Activities | (3,530) | 24,844
Net Increase in Cash and Cash Equivalents | 677 | 56
Cash and Cash Equivalents at the Beginning of the Period | 8,602 | 8,661
Cash and Cash Equivalents at the End of the Period | 9,279 | 8,717
Supplemental Disclosures: |  |
Income taxes paid (refunded) | (94) | 541
Interest paid | $ 2,147 | $ 1,619

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