Income taxes (Details) $ in Thousands	12 Months Ended
Dec. 31, 2021 USD ($)
Income Tax Disclosure [Abstract]
Federal net operating loss carryforwards expiration year	At December 31, 2021, the Company had net operating loss carryforwards of $53,031 for federal income tax purposes which will begin to expire in 2022 if unused.
Federal net operating loss carry-forward	$ 53,031
State net operating loss carry-forward	$ 37,850
State net operating loss carryforwards expiration year	2028

Amount before allocation of valuation allowances of deferred tax asset attributable to deductible domestic operating loss carryforwards. Excludes state and local operating loss carryforwards.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=121826272&loc=d3e32632-109319

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 6
-URI http://asc.fasb.org/extlink&oid=121826272&loc=d3e32621-109319

Name:	us-gaap_DeferredTaxAssetsOperatingLossCarryforwardsDomestic
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant