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Consolidated Statements of Cash Flows (USD $) | 12 Months Ended
--- | ---
Jun. 30, 2013 | Jun. 30, 2012 | Jun. 30, 2011
Cash Flows From Operating Activities |  |  |
Net income (loss) attributable to the Company | $ 6,628,428 | $ 5,132,130 | $ (241,553)
Adjustments to reconcile net income (loss) to net cash provided by operating activities: |  |  |
Depreciation, depletion and amortization | 1,341,055 | 1,150,454 | 563,104
Stock-based compensation | 1,531,745 | 1,475,995 | 1,536,007
Accretion of asset retirement obligations | 72,312 | 77,505 | 59,913
Settlement of asset retirement obligations | (90,531) | (61,936) | (1,847)
Deferred income taxes | 2,512,978 | 2,549,592 | 380,386
Deferred rent | (17,146) | (15,401) | 3,777
Other |  |  | 32,080
Changes in operating assets and liabilities: |  |  |
Receivables from oil and natural gas sales | (289,506) | 216,057 | (1,023,038)
Receivables from income taxes and other | (189,813) | (64,194) | 687,228
Due to/from joint interest partners | (9,947) | 139,705 | (87,743)
Prepaid expenses and other current assets | (33,121) | (165,581) | 90,652
Accounts payable and accrued expenses | 538,057 | 379,873 | 497,783
Royalties payable | (202,586) | (448,638) | 521,589
Income taxes payable | 141,581 | 9,845 | 36,778
Net cash provided by operating activities | 11,933,506 | 10,375,406 | 3,055,116
Cash Flows from Investing Activities |  |  |
Proceeds from asset sales | 3,479,976 | 799,610 | 231,326
Development of oil and natural gas properties | (4,163,080) | (3,291,921) | (2,509,652)
Acquisitions of oil and natural gas properties | (755,194) | (3,768,162) | (997,279)
Capital expenditures for other equipment |  | (61,176) | (864)
Advances to joint venture operating partner |  | (224,206) |
Maturities of certificates of deposit |  |  | 1,100,000
Other assets | (32,160) | (35,056) | (48,702)
Net cash used in investing activities | (1,470,458) | (6,580,911) | (2,225,171)
Cash Flows from Financing Activities |  |  |
Proceeds from issuance of preferred stock, net |  | 6,930,535 |
Proceeds from issuance of restricted stock | 32 |  | 28
Proceeds from the exercise of stock options | 70,719 |  | 106,049
Purchases of treasury stock | (137,818) |  |
Preferred stock dividends paid | (674,302) | (630,391) |
Deferred loan costs | (16,211) | (163,257) |
Windfall tax benefit | 794,569 | 249,728 | 173,157
Net cash provided by financing activities | 36,989 | 6,386,615 | 279,234
Net increase in cash and cash equivalents | 10,500,037 | 10,181,110 | 1,109,179
Cash and cash equivalents, beginning of period | 14,428,548 | 4,247,438 | 3,138,259
Cash and cash equivalents, end of period | $ 24,928,585 | $ 14,428,548 | $ 4,247,438

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