Commitments & Contingencies (Details) - USD ($)
$ in Thousands, shares in Millions
1 Months Ended 12 Months Ended
Jul. 31, 2021
Jul. 31, 2009
Dec. 31, 2021
Dec. 31, 2020
Commitments And Contingencies [Line Items]        
Lease, Cost     $ 90  
Settlement agreement description In July 2021, Legacy Clarus and Lipocine entered into a settlement agreement that settled all claims between the parties, including a pending interference matter (No. 106,128) and the pending Legacy Clarus counterclaims against Lipocine, and provided for a payment by Lipocine to Legacy Clarus of a $4.0 million settlement fee payable as follows: $2.5 million upfront, $1.0 million within 12 months, and the remainder within two years. The Company is recognizing the payments in income as they are received. The Company received payment of $2.5 million of the $4.0 million in July 2021, which is recorded within the litigation settlement line in other income and expense on the statement of operations.      
Catalent Pharma Solutions L L C [Member]        
Commitments And Contingencies [Line Items]        
Annual Purchases   7.0    
Lease Agreements [Member]        
Commitments And Contingencies [Line Items]        
Rent Expense     200 $ 200
Catalent Agreement [Member]        
Commitments And Contingencies [Line Items]        
Purchase Amount     $ 6,200 $ 3,200
Pfizer Agreement [Member]        
Commitments And Contingencies [Line Items]        
Annual Purchases     1.8  
Purchase Amount     $ 1,800