Commitments and Contingencies (Details) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021 USD ($) $ / ft²	Jun. 30, 2020 USD ($)	Jun. 30, 2021 USD ($) $ / ft²	Jun. 30, 2020 USD ($)	Dec. 31, 2020 USD ($)
Commitments and Contingencies [Abstract]
Lease term	15 years		15 years
Base rent per square foot (in dollars per square foot) | $ / ft²	18		18
Base rental			$ 1,100
Accumulated amortization on the leased property	$ 5,600		5,600		$ 5,500
Lease Cost [Abstract]
Finance lease cost - interest expense	260	$ 267	523	$ 536
Finance lease cost - amortization of right-of-use asset	67	67	134	134
Operating lease cost	163	105	346	180
Sublease income	(46)	(46)	(92)	(92)
Total lease cost	444	393	911	758
Cash paid for amounts included in the measurement of lease liabilities [Abstract]
Operating cash flows from finance lease	0	0	0	0
Operating cash flows from operating leases	105	88	218	153
Financing cash flows from finance lease	64	53	125	104
Total cash paid for amounts included in the measurement of lease liabilities	169	141	343	257
Right-of-use assets obtained in exchange for new operating lease liabilities	$ 0	$ 324	$ 2,143	$ 324
Weighted average remaining lease term-finance lease	7 years 6 months	8 years 6 months	7 years 6 months	8 years 6 months
Weighted average remaining lease term-operating leases	3 years 2 months 12 days	2 years 4 months 24 days	3 years 2 months 12 days	2 years 4 months 24 days
Weighted average discount rate-finance lease	19.10%	19.10%	19.10%	19.10%
Weighted average discount rate-operating leases	5.00%	5.00%	5.00%	5.00%
Finance lease right-of-use asset, net of amortization	$ 1,600		$ 1,600		1,700
Operating right-of-use assets, net of amortization	2,700		2,700		$ 800
Finance Leases [Abstract]
2021 (excluding the three months ended March 31, 2021)	647		647
2022	1,080		1,080
2023	1,080		1,080
2024	1,080		1,080
2025	1,080		1,080
Thereafter	3,240		3,240
Total lease payments	8,207		8,207
Less imputed interest	(3,937)		(3,937)
Total lease liabilities	4,270		4,270
Operating Leases [Abstract]
2021 (excluding the three months ended March 31, 2021)	420		420
2022	657		657
2023	517		517
2024	393		393
2025	332		332
Thereafter	1,660		1,660
Total lease payments	3,979		3,979
Less imputed interest	(1,106)		(1,106)
Total lease liabilities	2,873		2,873
Total Leases [Abstract]
2021 (excluding the three months ended March 31, 2021)	1,067		1,067
2022	1,737		1,737
2023	1,597		1,597
2024	1,473		1,473
2025	1,412		1,412
Thereafter	4,900		4,900
Total lease payments	12,186		12,186
Less imputed interest	(5,043)		(5,043)
Total lease liabilities	7,143		7,143
Minimum future sublease rental, due from affiliated entities	$ 1,200		$ 1,200
Period of minimum future sublease rental, due from affiliated entities			8 years