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Retirement Savings Plans | 12 Months Ended
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Dec. 31, 2017
Retirement Benefits [Abstract] |
Retirement Savings Plans | RETIREMENT SAVINGS PLANS 401(k) Profit-Sharing Plan The Company has a 401(k) profit-sharing plan, which covers substantially all U.S. employees. Participation begins the first day of the quarter following completion of 30 days of service. The Company may elect to make discretionary matching or non-matching contributions. All Company contributions to the plan as determined by the Board of Directors totaled $7,666,000, $7,754,000 and $6,981,000 for the years ended December 31, 2017, 2016 and 2015, respectively. Deferred Compensation Plan The Company sponsors a nonqualified retirement savings plan for certain senior management employees whose contributions to the tax qualified 401(k) plan would be limited by provisions of the Internal Revenue Code. This plan allows participants to defer receipt of a portion of their salary and incentive compensation and to receive matching contributions for a portion of the deferred amounts. Company matching contributions to the plan totaled $210,000, $200,000 and $180,000 for the years ended December 31, 2017, 2016 and 2015, respectively. Participants earn a return on their deferred compensation based on investment earnings of participant-selected mutual funds. Deferred compensation, including accumulated earnings on the participant-directed investment selections, is distributable in cash at participant-specified dates or upon retirement, death, disability, or termination of employment. The Company has purchased specific mutual funds in the same amounts as the participant-directed investment selections underlying the deferred compensation liabilities. These investment securities and earnings thereon, held in an irrevocable trust, are intended to provide a source of funds to meet the deferred compensation obligations, subject to claims of creditors in the event of the Company's insolvency. Changes in the market value of the participants' investment selections are recorded as an adjustment to the investments and as unrealized gains and losses in SG&A expense. A corresponding adjustment of an equal amount is made to the deferred compensation liabilities and compensation expense, which is included in SG&A expense. At December 31, 2017 and 2016, the long-term portion of the liability to participants under this plan was $9,319,000 and $8,411,000, respectively, and was recorded in other long-term liabilities. At December 31, 2017 and 2016, the current portion of the participant liability was $1,437,000 and $472,000, respectively, and was recorded in accrued liabilities. At December 31, 2017 and 2016, the fair value of the long-term portion of the mutual fund investments related to this plan was $9,319,000 and $8,411,000, respectively, and was recorded in other non-current assets. At December 31, 2017 and 2016, the current portion of the mutual fund investments related to this plan was $1,437,000 and $472,000, respectively, and was recorded in short-term investments.

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- Definition The entire disclosure for an entity's employee compensation and benefit plans, including, but not limited to, postemployment and postretirement benefit plans, defined benefit pension plans, defined contribution plans, non-qualified and supplemental benefit plans, deferred compensation, share-based compensation, life insurance, severance, health care, unemployment and other benefit plans. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -URI http://asc.fasb.org/topic&trid=2235017 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 712 -URI http://asc.fasb.org/topic&trid=2197446 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 710 -URI http://asc.fasb.org/topic&trid=2127225 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -URI http://asc.fasb.org/topic&trid=2228938 + Details
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