401(k) Savings Plan	12 Months Ended
Dec. 31, 2020
Compensation And Retirement Disclosure [Abstract]
401(k) Savings Plan	(7) 401(k) Savings Plan The Company maintains voluntary defined contribution plans, which are qualified, covering employees that meet eligibility requirements. Eligible employees may elect to defer and contribute a portion of their eligible compensation to the plans, not to exceed the dollar amounts set by applicable laws. During 2011, the Company elected to match a portion of the employee contributions up to a defined maximum. In 2019 and 2020, cash contributions were made in the amount of $228,000 and $230,000 respectively.

The entire disclosure for retirement benefits.

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