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Employee Benefits Plan (Details 7) - DB Pension Plan - USD ($) $ in Thousands | Dec. 31, 2016 | Dec. 31, 2015 | Dec. 31, 2014
--- | --- | --- | ---
Total Fair Value of Plan Assets | $ 71,807 | $ 68,931 | $ 71,227
(Level 1) |  |  |
Total Fair Value of Plan Assets | 71,057 | 61,046 |
(Level 2) |  |  |
Total Fair Value of Plan Assets | 750 | 7,885 |
(Level 3) |  |  |
Total Fair Value of Plan Assets | 0 | 0 |
Cash and cash equivalents |  |  |
Total Fair Value of Plan Assets | 1,147 | 694 |
Cash and cash equivalents | (Level 1) |  |  |
Total Fair Value of Plan Assets | 1,147 | 694 |
Cash and cash equivalents | (Level 2) |  |  |
Total Fair Value of Plan Assets | 0 | 0 |
Cash and cash equivalents | (Level 3) |  |  |
Total Fair Value of Plan Assets | 0 | 0 |
U.S. Treasury securities |  |  |
Total Fair Value of Plan Assets |  | 7,599 |
U.S. Treasury securities | (Level 1) |  |  |
Total Fair Value of Plan Assets |  | 7,599 |
U.S. Treasury securities | (Level 2) |  |  |
Total Fair Value of Plan Assets |  | 0 |
U.S. Treasury securities | (Level 3) |  |  |
Total Fair Value of Plan Assets |  | 0 |
Obligations of U.S. Government sponsored entities |  |  |
Total Fair Value of Plan Assets |  | 508 |
Obligations of U.S. Government sponsored entities | (Level 1) |  |  |
Total Fair Value of Plan Assets |  | 0 |
Obligations of U.S. Government sponsored entities | (Level 2) |  |  |
Total Fair Value of Plan Assets |  | 508 |
Obligations of U.S. Government sponsored entities | (Level 3) |  |  |
Total Fair Value of Plan Assets |  | 0 |
Corporate bonds and notes |  |  |
Total Fair Value of Plan Assets |  | 6,627 |
Corporate bonds and notes | (Level 1) |  |  |
Total Fair Value of Plan Assets |  | 0 |
Corporate bonds and notes | (Level 2) |  |  |
Total Fair Value of Plan Assets |  | 6,627 |
Corporate bonds and notes | (Level 3) |  |  |
Total Fair Value of Plan Assets |  | 0 |
Common stocks |  |  |
Total Fair Value of Plan Assets | 23,291 | 25,324 |
Common stocks | (Level 1) |  |  |
Total Fair Value of Plan Assets | 23,291 | 25,324 |
Common stocks | (Level 2) |  |  |
Total Fair Value of Plan Assets | 0 | 0 |
Common stocks | (Level 3) |  |  |
Total Fair Value of Plan Assets | 0 | 0 |
Mutual funds |  |  |
Total Fair Value of Plan Assets | 46,619 | 27,429 |
Mutual funds | (Level 1) |  |  |
Total Fair Value of Plan Assets | 46,619 | 27,429 |
Mutual funds | (Level 2) |  |  |
Total Fair Value of Plan Assets | 0 | 0 |
Mutual funds | (Level 3) |  |  |
Total Fair Value of Plan Assets | 0 | 0 |
Preferred stocks |  |  |
Total Fair Value of Plan Assets | 750 | 750 |
Preferred stocks | (Level 1) |  |  |
Total Fair Value of Plan Assets | 0 | 0 |
Preferred stocks | (Level 2) |  |  |
Total Fair Value of Plan Assets | 750 | 750 |
Preferred stocks | (Level 3) |  |  |
Total Fair Value of Plan Assets | $ 0 | $ 0 |

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