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Leases (Details) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019 USD ($) Option	Sep. 30, 2018 USD ($)	Sep. 30, 2019 USD ($) Option	Sep. 30, 2018 USD ($)	Jan. 01, 2019 USD ($)
Operating lease right-of-use assets	$ 10,903		$ 10,903
Operating lease liabilities	14,228		$ 14,228
Initial term of lease			12 months
Operating lease cost	$ (1,558)	$ (1,182)	$ (3,789)	$ (3,804)
Number of options to renew lease | Option	1		1
Minimum
Renewal terms to extend the lease	1 year		1 year
Maximum
Renewal terms to extend the lease	5 years		5 years
Building
Operating lease cost	$ (955)	(885)	$ (2,676)	(2,846)
Automobile
Operating lease cost	$ (603)	$ (297)	$ (1,113)	$ (958)
Accounting Standards Update 2016-02 | Adjustment
Operating lease right-of-use assets					$ 9,200
Accounting Standards Update 2016-02 | Adjustment | Other Accrued Expenses
Operating lease liabilities					2,500
Accounting Standards Update 2016-02 | Adjustment | Long Term Lease Liabilities
Operating lease liabilities					$ 8,500

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+ References

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+ References

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Term of lessee's operating lease renewal, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
-Section 50
-Paragraph 3
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Amount of single lease cost, calculated by allocation of remaining cost of lease over remaining lease term. Includes, but is not limited to, single lease cost, after impairment of right-of-use asset, calculated by amortization of remaining right-of-use asset and accretion of lease liability.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Publisher FASB
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Present value of lessee's discounted obligation for lease payments from operating lease.

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- Definition

Amount of lessee's right to use underlying asset under operating lease.

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