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Director and Employee Benefit Plans (Details) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2015 | Dec. 31, 2015 | Dec. 31, 2014 | Dec. 31, 2013
Defined Benefit Plan and Defined Contribution Plan Disclosure [Line Items] |  |  |  |
Operating income |  | $ 123,612 | $ 90,393 | $ 90,100
Employer matching contribution, percent |  | 3.00% |  |
Maximum annual contribution per employee, percent |  | 50.00% |  |
Employer's maximum additional match, percentage |  | 2.00% |  |
Employer's discretionary matching contribution |  | 4.00% |  |
Cash contribution to profit-sharing plan |  | $ 3,400 | 2,500 | 2,300
Noncontributory Defined Benefit Multi-Employer Retirement Plan |  |  |  |
Defined Benefit Plan and Defined Contribution Plan Disclosure [Line Items] |  |  |  |
Retirement plan expense |  | $ 600 | $ 700 | $ 600
Big Fish Games |  |  |  |
Defined Benefit Plan and Defined Contribution Plan Disclosure [Line Items] |  |  |  |
Employer matching contribution, percent |  | 3.00% |  |
Restatement Adjustment | Correcting benefit for life-to-date appreciation of hypothetical shares from inception of the deferred plan |  |  |  |
Defined Benefit Plan and Defined Contribution Plan Disclosure [Line Items] |  |  |  |
Operating income | $ 2,800 |  |  |
Restatement Adjustment | Correcting benefit previously recognized as operating expense in 2015 |  |  |  |
Defined Benefit Plan and Defined Contribution Plan Disclosure [Line Items] |  |  |  |
Operating income | 1,500 |  |  |
Restatement Adjustment | Correcting benefit previously recognized as operating expense in 2006 to 2014 |  |  |  |
Defined Benefit Plan and Defined Contribution Plan Disclosure [Line Items] |  |  |  |
Operating income | $ 1,300 |  |  |

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- Definition The amount of the cost recognized during the period for defined contribution plans. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 70 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=49170846&loc=d3e28014-114942 + Details
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