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CONDENSED CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY (unaudited) (USD $) In Thousands, except Share data | Total | Common Class A Member | Common Class B Member | Additional Paid In Capital Member | Retained Earnings Member | Accumulated Other Comprehensive Income (Loss) Member
--- | --- | --- | --- | --- | --- | ---
Opening Balance VALUE at Dec. 31, 2009 | $ 113,952 | $ 297 | $ 75 | $ 588,622 | $ (461,610) | $ (13,432)
Opening Balance SHARES at Dec. 31, 2009 |  | 29,755,161 | 7,457,532 |  |  |
Conversion of Class B common stock to Class A common stock SHARES |  | 90,000 | (90,000) |  |  |
Compensation expense related to granting of stock options SHARES |  | 0 | 0 |  |  |
Compensation expense related to granting of restricted stock units SHARES |  | 941,213 | 0 |  |  |
Issuance of common stock related to an incentive plan SHARES |  | 0 | 0 |  |  |
Common stock repurchase SHARES |  | 0 | 0 |  |  |
Exercise of stock options SHARES |  | 97,725 | 0 |  |  |
Purchase of vested employee restricted stock units SHARES |  | (183,531) | 0 |  |  |
Net income (loss) | 46,436 | 0 | 0 | 0 | 46,436 | 0
Conversion of Class B common stock to Class A common stock VALUE | 0 | 1 | (1) | 0 | 0 | 0
Compensation expense related to granting of stock options VALUE | 549 | 0 | 0 | 549 | 0 | 0
Compensation expense related to granting of restricted stock units VALUE | 4,979 | 10 | 0 | 4,969 | 0 | 0
Issuance of common stock related to an incentive plan VALUE | 0 | 0 | 0 | 0 | 0 | 0
Common stock repurchase VALUE | 0 | 0 | 0 | 0 | 0 | 0
Purchase of vested employee restricted stock units | (1,628) | (2) | 0 | (1,626) | 0 | 0
Net dividend equivalents on restricted stock units net of forfeitures and payments VALUE | 94 | 0 | 0 | 0 | 94 | 0
Realization of tax benefit for dividend equivalent payments VALUE | 0 | 0 | 0 | 0 | 0 | 0
Exercise of stock options VALUE | 130 | 1 | 0 | 129 | 0 | 0
Net unrealized gain (loss) on derivatives VALUE | 6,155 | 0 | 0 | 0 | 0 | 6,155
Ending Balance VALUE at Dec. 31, 2010 | 170,667 | 307 | 74 | 592,643 | (415,080) | (7,277)
Ending Balance SHARES at Dec. 31, 2010 |  | 30,700,568 | 7,367,532 |  |  |
Conversion of Class B common stock to Class A common stock SHARES |  | 0 | 0 |  |  |
Compensation expense related to granting of stock options SHARES |  | 0 | 0 |  |  |
Compensation expense related to granting of restricted stock units SHARES |  | 426,501 | 0 |  |  |
Issuance of common stock related to an incentive plan SHARES |  | 0 | 0 |  |  |
Common stock repurchase SHARES |  | 0 | 0 |  |  |
Exercise of stock options SHARES |  | 49,875 | 0 |  |  |
Purchase of vested employee restricted stock units SHARES |  | (282,973) | 0 |  |  |
Net income (loss) | 49,755 | 0 | 0 | 0 | 49,755 | 0
Conversion of Class B common stock to Class A common stock VALUE | 0 | 0 | 0 | 0 | 0 | 0
Compensation expense related to granting of stock options VALUE | 249 | 0 | 0 | 249 | 0 | 0
Compensation expense related to granting of restricted stock units VALUE | 4,417 | 5 | 0 | 4,412 | 0 | 0
Issuance of common stock related to an incentive plan VALUE | 0 | 0 | 0 | 0 | 0 | 0
Common stock repurchase VALUE | 0 | 0 | 0 | 0 | 0 | 0
Purchase of vested employee restricted stock units | (2,976) | (3) | 0 | (2,973) | 0 | 0
Payments of dividends VALUE | 0 | 0 | 0 | 0 | 0 | 0
Net dividend equivalents on restricted stock units net of forfeitures and payments VALUE | 3 | 0 | 0 | 0 | 3 | 0
Exercise of stock options VALUE | 66 | 0 | 0 | 66 | 0 | 0
Net unrealized gain (loss) on investments VALUE | 0 | 0 | 0 | 0 | 0 | 0
Net unrealized gain (loss) on derivatives VALUE | 8,135 | 0 | 0 | 0 | 0 | 8,135
Ending Balance VALUE at Jun. 30, 2011 | $ 230,316 | $ 309 | $ 74 | $ 594,397 | $ (365,322) | $ 858
Ending Balance SHARES at Jun. 30, 2011 |  | 30,893,971 | 7,367,532 |  |  |

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- Definition Appreciation or loss in value (before reclassification adjustment) of the total of unsold securities during the period being reported on, net of tax. Reclassification adjustments include: (1) the unrealized holding gain or loss, net of tax, at the date of the transfer for a debt security from the held-to-maturity category transferred into the available-for-sale category. Also includes the unrealized gain or loss at the date of transfer for a debt security from the available-for-sale category transferred into the held-to-maturity category; (2) the unrealized gains or losses realized upon the sale of securities, after tax; and (3) the unrealized gains or losses realized upon the write-down of securities, after tax. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 130 -Paragraph 17, 22 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 115 -Paragraph 13 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Research Bulletin (ARB) -Number 51 -Paragraph 38 -Subparagraph c(3) Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 130 -Paragraph 24 -Subparagraph b + Details
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- Definition The cash outflow to reacquire common and preferred stock. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 18 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 20 -Subparagraph a + Details
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- Definition The cash outflow from the entity's earnings to the shareholders. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 18 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 20 -Subparagraph a + Details
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- Definition Number of stock granted during the period as a result of any share-based compensation plan other than en employee stock ownership plan + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 123R -Paragraph 43 + Details
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- Definition Value of stock granted during the period as a result of any share-based compensation plan other than an employee stock ownership plan (ESOP). This element is not the recognition of share-based compensation expense in pursuant to FAS 123R. That element is AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue (Adjustments to Additional Paid in Capital, Share-based Compensation, Requisite Service Period Recognition, Value). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 123R -Paragraph 10, 15 + Details
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- Definition Total of Stockholders' Equity (deficit) items, net of receivables from officers, directors owners, and affiliates of the entity including portions attributable to both the parent and noncontrolling interests (previously referred to as minority interest), if any. The entity including portions attributable to the parent and noncontrolling interests is sometimes referred to as the economic entity. This excludes temporary equity and is sometimes called permanent equity. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Research Bulletin (ARB) -Number 51 -Paragraph 25 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Research Bulletin (ARB) -Number 51 -Paragraph 26 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Research Bulletin (ARB) -Number 51 -Paragraph A3 -Appendix A + Details
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- Definition Number of shares issued during the period as a result of an employee stock purchase plan. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 29, 30 -Article 5 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Principles Board Opinion (APB) -Number 12 -Paragraph 10 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Article 3 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 129 -Paragraph 5 + Details
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- Definition Number of shares issued during the period related to Restricted Stock Awards, net of any shares forfeited. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 29, 30 -Article 5 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Principles Board Opinion (APB) -Number 12 -Paragraph 10 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Article 3 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 129 -Paragraph 4, 5 + Details
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- Definition Number of shares issued during the period as a result of the exercise of stock options. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Principles Board Opinion (APB) -Number 12 -Paragraph 10 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Article 3 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 29, 30 -Article 5 + Details
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- Definition Aggregate change in value for stock issued during the period as a result of employee stock purchase plan. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Principles Board Opinion (APB) -Number 12 -Paragraph 10 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Article 3 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 + Details
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- Definition Value of stock related to Restricted Stock Awards issued during the period, net of the stock value of such awards forfeited. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Principles Board Opinion (APB) -Number 12 -Paragraph 10 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 123R -Paragraph A240 -Subparagraph b + Details
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- Definition Value stock issued during the period as a result of the exercise of stock options. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Principles Board Opinion (APB) -Number 12 -Paragraph 10 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Article 3 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 + Details
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- Definition Number of shares that have been repurchased during the period and have not been retired and are not held in treasury. Some state laws may govern the circumstances under which an entity may acquire its own stock and prescribe the accounting treatment therefore. This element is used when state law does not recognize treasury stock. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 29, 30 -Article 5 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Principles Board Opinion (APB) -Number 12 -Paragraph 10 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Article 3 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Research Bulletin (ARB) -Number 43 -Chapter 1 -Section B -Paragraph 11A + Details
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- Definition This element represents the value of stock that has been repurchased during the period and has not been retired and is not held in treasury. Some state laws may mandate the circumstances under which an entity may acquire its own stock and prescribe the accounting treatment therefore. This element is used when state law does not recognize treasury stock. + References Reference 1: 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 2: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Principles Board Opinion (APB) -Number 12 -Paragraph 10 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Article 3 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Research Bulletin (ARB) -Number 43 -Chapter 1 -Section B -Paragraph 11A + Details
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