Leases (Details) $ in Thousands	1 Months Ended		3 Months Ended	12 Months Ended
	May 31, 2016 USD ($)	Dec. 31, 2013 ft²	Sep. 30, 2019 lease	Dec. 31, 2020 USD ($) lease	Dec. 31, 2019 USD ($)	Sep. 30, 2021
Operating Leased Assets [Line Items]
Operating lease, renewal term				15 years
Operating lease, termination period				1 year
Lessor, operating lease, number of leases | lease			1	2
Operating lease, lease income				$ 1,400	$ 1,200
Related party, operating lease expense reimbursed				$ 66	76
Minimum
Operating Leased Assets [Line Items]
Remaining lease term				1 month
Maximum
Operating Leased Assets [Line Items]
Remaining lease term				4 years
Forecast
Operating Leased Assets [Line Items]
Lessee, operating lease not yet commenced, term of contract						10 years
Office Building
Operating Leased Assets [Line Items]
Sale and leaseback transaction, gain (loss), net					2,000
Hotel
Operating Leased Assets [Line Items]
Lessor, operating lease, remaining lease term				9 years
Lease Agreements | Leased office space | Family Member(s) of Largest Shareholder
Operating Leased Assets [Line Items]
Payments received from related party				$ 200	12
Area under lease, related party (in square feet) | ft²		2,200
Related party transaction sublease notice period		90 days
Annual lease payments, related party	$ 100				$ 49