Summary of Significant Accounting Policies (Schedule of Earnings Per Share) (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Summary of Significant Accounting Policies [Abstract]
Net loss	$ (55,010)	$ (49,811)	$ (47,365)
Weighted average common stock outstanding used to compute net loss per share, basic (in shares)	35,775,672	34,635,358	32,965,539
Weighted average common stock outstanding used to compute net loss per share,diluted (in shares)	35,775,672	34,635,358	32,965,539
Net loss per share, basic	$ (1.54)	$ (1.44)	$ (1.44)
Net loss per share, diluted	$ (1.54)	$ (1.44)	$ (1.44)