Leases (Tables)

12 Months Ended

Dec. 31, 2021

Leases [Abstract]

Net Operating Lease Expense

The Company recognizes operating lease expense and lease payments from the sublease on a straight-line basis in its statements of operations over the lease terms. During the years ended December 31, 2021 and 2020, the net operating lease expenses were as follows:

	Years ended December 31,
	2021			2020
Operating lease expense	$	688,000		$	591,000
Sublease income		(84,000	)		(77,000	)
Variable lease expense		19,000			21,000
Total lease expense	$	623,000		$	535,000

Operating Lease Right-of-use Assets and Liabilities

The tables below show the beginning balances of the operating ROU assets and lease liabilities as of January 1, 2021 and the ending balances as of December 31, 2021, including the changes during the period.

	Operating Lease ROU Assets
Operating lease ROU assets at January 1, 2021	$	2,093,000
Amortization of operating lease ROU assets		(342,000	)
Addition of operating lease ROU assets		816,000
Operating lease ROU assets at December 31, 2021	$	2,567,000

	Operating Lease Liabilities
Operating lease liabilities at January 1, 2021	$	2,178,000
Principal payments on operating lease liabilities		(321,000	)
Addition of operating lease liabilities		866,000
Operating lease liabilities at December 31, 2021		2,723,000
Less non-current portion		2,297,000
Current portion at December 31, 2021	$	426,000

Maturities of Operating Lease Liabilities

The maturities of the operating lease liabilities are as follows:

	As of December 31
2022	$	750,000
2023		767,000
2024		785,000
2025		802,000
2026		267,000
Thereafter		246,000
Total payments		3,617,000
Less imputed interest		(894,000	)
Total operating lease liabilities	$	2,723,000

Future Lease Payments from Sublease Agreement

The Tenant is also responsible for paying to the Company all tenant energy costs, annual operating costs, and annual tax costs attributable to the subleased space during the term of the sublease.

	As of December 31, 2021
2022	$	82,000
2023		84,000
2024		86,000
2025		88,000
2026		75,000
	$	415,000