Property and Equipment - Summary (FY) (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Property, Plant and Equipment [Line Items]
Property and equipment, gross		$ 430	$ 370
Accumulated depreciation		(368)	(313)
Property and equipment, net	$ 55	62	57
Furniture and fixtures
Property, Plant and Equipment [Line Items]
Property and equipment, gross		26	26
Computer equipment
Property, Plant and Equipment [Line Items]
Property and equipment, gross		314	254
Leasehold improvements
Property, Plant and Equipment [Line Items]
Property and equipment, gross		$ 90	$ 90

Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services.

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Amount before accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

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