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Leases (FY) (Tables)
 12 Months Ended
Dec. 31, 2022
Leases [Abstract]  
Lease costs and other information The lease costs are reflected in the statement of operations and comprehensive loss as follows (in thousands):
 
 ​ ​
December 31,
 
 ​ ​
2022
 ​ ​
2021
 ​ ​
2020
Research and development
 ​ ​
$224
 ​ ​
$268
 ​ ​
$268
General and administrative
 ​ ​
1,542
​ ​
1,347
​ ​
1,398
Less: sublease income
 ​ ​
(260)
​ ​
(260)
​ ​
(42)
Total lease costs
 ​ ​
$1,506
 ​ ​
$1,355
 ​ ​
$1,624

The weighted-average remaining lease terms and discount rates for operating leases were as follows:
 
 ​ ​
December 31,
 
 ​ ​
2022
 ​ ​
2021
 ​ ​
2020
Weighted average remaining lease term in years
 ​ ​
2.8
 ​ ​
2.9
 ​ ​
2.4
Weighted average discount rate(1)
 ​ ​
17%
 ​ ​
18%
 ​ ​
20%

(1)
For the lease contracts denominated in Canadian dollars, the discount rate was determined on a currency-equivalent basis.
Future minimum operating lease payments

Future minimum operating lease payment under non-cancelable leases as of December 31, 2022, were as follows (in thousands):
Year ended December 31,
 ​ ​
Operating leases
2023
 ​ ​
$1,533
2024
 ​ ​
1,341
2025
 ​ ​
1,137
2026
 ​ ​
1,168
2027
 ​ ​
1,199
Thereafter
 ​ ​
7,849
Total future minimum lease payments
 ​ ​
$14,227