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Corporate Office Relocation - Contract Termination and Relocation (Details) - Corporate Office Relocation - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Sep. 30, 2017	Dec. 31, 2018	Dec. 31, 2017
Corporate Office Relocation
Remaining lease and relocation cost		$ 0	$ 2,113
Remaining lease costs
Corporate Office Relocation
Remaining lease and relocation cost	$ 1,300		1,258
Impairment of leasehold improvements and furniture and fixtures
Corporate Office Relocation
Remaining lease and relocation cost			795
Relocation costs
Corporate Office Relocation
Remaining lease and relocation cost			$ 60

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[Line Items] for Corporate Office Relocation [Table]

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Relocation Expenses Incurred

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