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Equity and Long-Term Incentive Compensation Plans - Equity Incentive Program (Details) shares in Thousands, $ in Thousands | 3 Months Ended |  |  |  |
--- | --- | --- | --- | --- | ---
Sep. 30, 2016 shares | Sep. 30, 2016 USD ($) plan shares | Jun. 30, 2016 USD ($) shares | Sep. 30, 2015 USD ($) | Dec. 31, 2014 USD ($)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |
Number of plans | plan |  |  | 2 |  |  |
Shares available for issuance (in shares) | [1] | 6,778 | 5,782 | 6,778 |  |
Total Shares Available for Grant under the Company's equity incentive plans: |  |  |  |  |  |
Balance as of June 30, 2016 (in shares) | [1] | 6,778 |  |  |  |
Balance as of September 30, 2016 (in shares) | [1] | 5,782 |  |  |  |
Dividends payable - financing activities | $ |  |  | $ 12,045 |  | $ 20,892 |
2004 Plan |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |
Shares available for issuance (in shares) |  | 4,100 | 4,100 |  |  |
Percent of fair market value on grant date (as a percent) |  |  | 100.00% |  |  |
Total Shares Available for Grant under the Company's equity incentive plans: |  |  |  |  |  |
Balance as of September 30, 2016 (in shares) |  | 4,100 |  |  |  |
Outside Director Option Plan |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |
Shares available for issuance (in shares) |  | 1,700 | 1,700 |  |  |
Total Shares Available for Grant under the Company's equity incentive plans: |  |  |  |  |  |
Balance as of September 30, 2016 (in shares) |  | 1,700 |  |  |  |
Restricted stock units |  |  |  |  |  |
Total Shares Available for Grant under the Company's equity incentive plans: |  |  |  |  |  |
Restricted stock units granted (in shares) | [1] | (1,031) |  |  |  |
Restricted stock units canceled (in shares) | [1] | 35 |  |  |  |
Restricted stock units | 2004 Plan |  |  |  |  |  |
Total Shares Available for Grant under the Company's equity incentive plans: |  |  |  |  |  |
Restricted stock units granted (in shares) | [2] | (515) |  |  |  |
Restricted stock units canceled (in shares) | [2] | 18 |  |  |  |
Restricted Stock Unit, Performance-Based and Service Based |  |  |  |  |  |
Total Shares Available for Grant under the Company's equity incentive plans: |  |  |  |  |  |
Dividends payable - financing activities | $ |  |  | $ 12,000 |  |  |
Restricted Stock Unit, Performance-Based and Service Based | Special cash dividend |  |  |  |  |  |
Total Shares Available for Grant under the Company's equity incentive plans: |  |  |  |  |  |
Dividends payable - financing activities | $ |  |  | $ 9,300 | $ 16,900 |  | $ 43,000
Awards Granted before November 6, 2013 | 2004 Plan |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |
Impact on share reserve multiplier |  |  | 1.8 |  |  |
Awards Granted after November 6, 2013 | 2004 Plan |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |
Impact on share reserve multiplier |  |  | 2.0 |  |  |
[1] | The number of restricted stock units reflects the application of the award multiplier as described above (1.8x or 2.0x depending on the grant date of the applicable award).
[2] | Share numbers reflect actual shares subject to awarded restricted stock units. As described above, under the terms of the 2004 Plan, the number of shares subject to each award reflected in this number is multiplied by either 1.8x or 2.0x (depending on the grant date of the award) to calculate the impact of the award on the share reserve under the 2004 Plan.

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- Definition Carrying value as of the balance sheet date of dividends declared but unpaid on equity securities issued by the entity and outstanding. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(a)(15)(5)) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 Reference 2: 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(24)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 3: 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(20)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(15)(5)) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 + Details
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- Definition The difference between the maximum number of shares (or other type of equity) authorized for issuance under the plan (including the effects of amendments and adjustments), and the sum of: 1) the number of shares (or other type of equity) already issued upon exercise of options or other equity-based awards under the plan; and 2) shares (or other type of equity) reserved for issuance on granting of outstanding awards, net of cancellations and forfeitures, if applicable. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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