Equity Incentive Plans (Restricted stock award) (Details) - Restricted Stock Awards [Member]	6 Months Ended
	Jun. 30, 2021 $ / shares shares
Shares
Outstanding at beginning of period (in shares) | shares	322,756
Forfeited/Cancelled (in shares) | shares	(924)
Vested and Issued as Common Stock (in shares) | shares	(167,691)
Outstanding at end of period (in shares) | shares	154,141
Weighted Avg Grant Date Fair Value
Outstanding at beginning of period (in dollars per share) | $ / shares	$ 19.55
Forfeited/Cancelled (in dollars per share) | $ / shares	4.46
Vested and Issued as Common Stock (in dollars per shares) | $ / shares	12.33
Outstanding at end of period (in dollars per share) | $ / shares	$ 27.49