Accrued Expenses and Other Liabilities - Jubilee Obligation (Details) - USD ($)	9 Months Ended
Sep. 30, 2017	Dec. 31, 2016
Actuarial assumptions used to calculate the Company's obligations for jubilee payments
Discount rate	1.30%
Annual salary increase rate	3.00%
Minimum
Actuarial assumptions used to calculate the Company's obligations for jubilee payments
Retirement age for men (in years)	61 years 6 months
Retirement age for women (in years)	56 years 6 months
Maximum
Actuarial assumptions used to calculate the Company's obligations for jubilee payments
Retirement age for men (in years)	65 years
Retirement age for women (in years)	65 years
Other non-current liabilities
Accrued Expenses and Other Liabilities
Provision for jubilee payments obligation	$ 134,000	$ 107,000

The retirement age of men used to calculate the defined benefit obligation.

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- Definition

The retirement age of men used to calculate the defined benefit obligation.

+ References

No definition available.

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- Definition

Represents information pertaining to the provision made for an obligation to pay the employees, jubilee benefits arising under the collective bargaining agreement for the chemical industry.

+ References

No definition available.

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- Definition

The interest rate used to adjust for the time value of money for the plan.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (k)(1)
-URI http://asc.fasb.org/extlink&oid=65897934&loc=d3e1928-114920

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- Definition

Expected rate of compensation increases (for pay-related plans).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (k)(2)
-URI http://asc.fasb.org/extlink&oid=65897934&loc=d3e1928-114920

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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No definition available.

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