Leases (Details) - USD ($)	12 Months Ended
	Dec. 31, 2019	Sep. 30, 2019	Jan. 01, 2019	Dec. 31, 2018
Lessor, Lease, Description [Line Items]
Operating lease, right-of-use asset	$ 17,679,000
Operating lease, liability	$ 19,740,000	$ 19,740,000
Termination period	1 year
Finance lease, right-of-use asset	$ 1,138,000
Finance lease accumulated depreciation	400,000
Non-cancelable operating leases				$ 35,018,000
Non-cancelable finance leases				$ 1,400,000
Operating lease, right-of-use asset, not yet commenced	$ 1
Accounting Standards Update 2016-02
Lessor, Lease, Description [Line Items]
Operating lease, right-of-use asset			$ 22,800,000
Operating lease, liability			$ 23,900,000
Minimum
Lessor, Lease, Description [Line Items]
Remaining lease term	1 year
Maximum
Lessor, Lease, Description [Line Items]
Remaining lease term	6 years
Renewal term	5 years