Employee Benefit Plan (Details) - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
401(k) Defined Contribution Plan [Member]
401(k) Defined Contribution Plan [Abstract]
Maximum percentage of compensation that can be deferred	100.00%
Minimum age to make contributions	18 years
Requisite service period	1 day
Percent of employees' base pay matched by employer	4.00%	4.00%	4.00%
Vesting period for Company's matching contributions	2 years
Compensation expense	$ 3.7	$ 3.6	$ 3.2
Additional discretionary contribution by employer, maximum percentage of employees' base pay	10.00%
Additional discretionary contribution by employer, annual vesting percentage	20.00%
Vesting period for Company's additional discretionary contributions	5 years
Defined Benefit Pension Plan [Member] \| Japan [Member]
Defined Benefit Pension Plan [Abstract]
Accrued pension liability	$ 3.5	3.0	6.1
Pension expense	$ 0.8	$ 0.8	$ 0.7

Minimum age to participate in the deferred compensation arrangement.

No definition available.

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The maximum percentage of employees' base pay that the employer will match as an additional discretionary contribution.

+ References

No definition available.

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Period which an employee's right to employer's additional discretionary contributions to a defined contribution plan vest, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

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Period in which an employee's right to employer's matching contributions to a defined contribution plan vest, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

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Minimum period the individual is required to perform services to be fully vested under the deferred compensation arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 710
-SubTopic 10
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- Definition

Amount of liability, recognized in statement of financial position, for defined benefit pension plan. Excludes other postretirement benefit plan.

+ References

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- Definition

Amount of cost for defined contribution plan.

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- Definition

Percentage of employees' gross pay for which the employer contributes a matching contribution to a defined contribution plan.

+ References

No definition available.

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- Definition

Percentage of employer's matching contributions to a defined contribution plan that vests in a given year.

+ References

No definition available.

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- Definition

Maximum percentage of employee gross pay the employee may contribute to a defined contribution plan.

+ References

No definition available.

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- Definition

Amount of cost (reversal of cost) for pension benefits. Excludes other postretirement benefits.

+ References

No definition available.

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