Commitments and Contingencies (Detail Textuals) - USD ($) $ in Millions |
12 Months Ended | |
|---|---|---|
Dec. 31, 2017 |
Dec. 31, 2016 |
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| Commitments and Contingencies Disclosure [Abstract] | ||
| Rent expense | $ 9.5 | $ 9.0 |
| Contingent rent expense | 1.2 | 0.8 |
| Rental income related to subleases | 0.7 | $ 0.7 |
| Minimum sublease rentals under non-cancelable subleases | 2.3 | |
| Accrued for future lease payments, net of expected sublease income | $ 1.5 | |
| X | ||||||||||
- Definition This element represents amount of accrued future lease payments net of expected sublease income. No definition available.
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| X | ||||||||||
- References No definition available.
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| X | ||||||||||
- Definition Contractually required future rental payments receivable on noncancelable subleasing arrangements. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
- Definition The increases or decreases in lease payments that result from changes occurring after the inception of the lease in the factors (other than the passage of time) on which lease payments are based, except that any escalation of minimum lease payments relating to increases in construction or acquisition cost of the leased property or for increases in some measure of cost or value during the construction or preconstruction period, are excluded from contingent rentals. Contingent rentals also may include amounts for which the triggering events have not yet occurred or the specified targets for which have not yet been achieved (such as sales based percentage rent), but which events are considered probable of occurring or which specified targets are considered probable of being achieved. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
- Definition Rental expense for the reporting period incurred under operating leases, including minimum and any contingent rent expense, net of related sublease income. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
- Definition The total amount of sublease rental income recognized during the period that reduces the entity's rent expense incurred under operating leases. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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