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Consolidated Balance Sheet (USD $) In Thousands, unless otherwise specified | Dec. 31, 2011 | Dec. 31, 2010
--- | --- | ---
ASSETS |  |
Cash and cash equivalents | $ 470,872 | $ 143,520
Short-term investments | 19,994 |
Accounts receivable - oil and gas revenues | 52,164 | 25,909
Accounts receivable - joint interest partners | 67,268 | 28,596
Inventory | 3,543 | 1,323
Prepaid expenses | 2,140 | 490
Advances to joint interest partners | 3,935 | 3,595
Deferred income taxes | 3,233 | 2,470
Other current assets | 491 |
Total current assets | 623,640 | 205,903
Property, plant and equipment |  |
Oil and gas properties (successful efforts method) | 1,235,357 | 580,968
Other property and equipment | 20,859 | 1,970
Less: accumulated depreciation, depletion, amortization and impairment | (176,261) | (99,255)
Total property, plant and equipment, net | 1,079,955 | 483,683
Derivative instruments | 4,362 |
Deferred costs and other assets | 19,425 | 2,266
Total assets | 1,727,382 | 691,852
LIABILITIES AND STOCKHOLDERS' EQUITY |  |
Accounts payable | 12,207 | 8,198
Advances from joint interest partners | 9,064 | 3,101
Revenues and production taxes payable | 19,468 | 6,180
Accrued liabilities | 119,692 | 58,239
Accrued interest payable | 15,774 | 2
Derivative instruments | 5,907 | 6,543
Other current liabilities | 472 |
Total current liabilities | 182,584 | 82,263
Long-term debt | 800,000 |
Asset retirement obligations | 13,075 | 7,640
Derivative instruments | 3,505 | 3,943
Deferred income taxes | 92,983 | 45,432
Other liabilities | 997 | 780
Total liabilities | 1,093,144 | 140,058
Commitments and contingencies (Note 14) |  |
Stockholders' equity |  |
Common stock, $0.01 par value; 300,000,000 shares authorized; 92,483,393 issued and 92,460,914 outstanding at December 31, 2011 and 92,240,345 shares issued and outstanding at December 31, 2010 | 921 | 920
Treasury stock, at cost; 22,479 shares | (602) |
Additional paid-in-capital | 647,374 | 643,719
Retained deficit | (13,455) | (92,845)
Total stockholders' equity | 634,238 | 551,794
Total liabilities and stockholders' equity | $ 1,727,382 | $ 691,852

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- Definition Total of all stockholders' equity (deficit) items, net of receivables from officers, directors, owners, and affiliates of the entity which are attributable to the parent. The amount of the economic entity's stockholders' equity attributable to the parent excludes the amount of stockholders' equity which is allocable to that ownership interest in subsidiary equity which is not attributable to the parent (noncontrolling interest, minority interest). This excludes temporary equity and is sometimes called permanent equity. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.29-31) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Research Bulletin (ARB) -Number 51 -Paragraph A3 -Appendix A Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 29, 30, 31 -Article 5 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 4 -Section E Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SAB TOPIC 4.E) -URI http://asc.fasb.org/extlink&oid=6228006&loc=d3e74512-122707 + Details
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