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Employee Benefit Plans (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2016 | Dec. 31, 2015 | Dec. 31, 2014
Deferred Compensation Plan [Line Items] |  |  |
Percent company total match on employee deferred compensation plan contributions, maximum (in hundredths) | 4.00% |  |
Matching contributions - deferred compensation plan | $ 194 | $ 218 | $ 233
Savings and Retirement 401K [Member] |  |  |
Defined Contribution Plan Disclosure [Line Items] |  |  |
Eligible employees' maximum allowable contribution as a percentage of compensation (in hundredths) | 75.00% |  |
Percentage company total match on employee contributions, maximum (in hundredths) | 4.00% |  |
Company match on the first three percent of compensation deferred (in hundredths) | 100.00% |  |
Company match on deferrals between three percent and five percent of compensation (in hundredths) | 50.00% |  |
Compensation deferred percentage eligible for one hundred percent match on employees' contributions (in hundredths) | 3.00% |  |
Compensation deferred percentage eligible for fifty percent match on employee contributions (in hundredths) | 5.00% |  |
Matching contributions -defined contribution plans | $ 5,817 | $ 5,583 | $ 5,235

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- Definition Percent Company total match on employee contributions Deferred Comp Plan in hundreths + References No definition available. + Details
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- Definition The maximum match by the company on employee contributions to the pension plan as a percentage of the employees' compensation. + References No definition available. + Details
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- Definition The amount of payment into the fund established for purposes of making future disbursements to the individual in accordance with the terms and understanding of the deferred compensation arrangement. + References No definition available. + Details
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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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