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Employee Benefit Plans | 12 Months Ended
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Dec. 31, 2018
Retirement Benefits [Abstract] |
Employee Benefit Plans |
9. | Employee Benefit Plans
The Company sponsors a qualified defined-contribution 401(k) plan that covers substantially all of its employees. Under the terms of the 401(k) plan, the Company matches a certain portion of employee contributions to their individual 401(k) accounts using the “safe harbor” guidelines provided in the Internal Revenue Code. Expenses related to matching employee contributions to the 401(k) plan were $3.1 million, $3.5 million, and $3.7 million in 2018, 2017, and 2016, respectively. Additionally, in 2018, 2017, and 2016 the Company provided discretionary supplemental contributions to the individual 401(k) accounts of substantially all employees. Each employee received a supplemental contribution to their account based on a uniform percentage of qualifying compensation established annually. The cost of these supplemental contributions totaled $5.3 million, $5.6 million, and $6.0 million in 2018, 2017, and 2016, respectively.

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- Definition The entire disclosure for pension and other postretirement benefits. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -URI http://asc.fasb.org/topic&trid=2235017 + Details
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