Quarterly report pursuant to Section 13 or 15(d)

SUMMARY OF INVESTMENTS (Details)

v3.22.1
SUMMARY OF INVESTMENTS (Details) - USD ($)
Mar. 31, 2022
Dec. 31, 2021
Net Investment Income [Line Items]    
Debt Securities, Available-for-sale, Amortized Cost $ 19,264,000 $ 55,951,000
Debt Securities, Available-for-sale 19,095,000 55,888,000
Other investments and Debt Securities, Amortized Cost Basic 29,264,000 72,703,000
Other Investments and Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax 169,000
Other Investments and Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax (0) (62,000)
Other Investments and Debt Securities, Available-for-sale 29,095,000 72,641,000
Corporate Debt Securities [Member]    
Net Investment Income [Line Items]    
Debt Securities, Available-for-sale, Amortized Cost 10,993,000 32,922,000
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax 163,000
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax 0 (58,000)
Debt Securities, Available-for-sale 10,830,000 32,864,000
Asset-backed Securities [Member]    
Net Investment Income [Line Items]    
Debt Securities, Available-for-sale, Amortized Cost 5,071,000 10,235,000
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax 6,000
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax 0 (4,000)
Debt Securities, Available-for-sale 5,065,000 10,231,000
Commercial Paper [Member]    
Net Investment Income [Line Items]    
Debt Securities, Available-for-sale, Amortized Cost 3,200,000 12,794,000
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax 0
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax 0
Debt Securities, Available-for-sale 3,200,000 12,794,000
Term Deposits [Member]    
Net Investment Income [Line Items]    
Other investments and Debt Securities, Amortized Cost Basic 10,000,000 16,752,000
Other Investments and Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax 0
Other Investments and Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax 0
Other Investments and Debt Securities, Available-for-sale $ 10,000,000 $ 16,752,000