Summary Of Significant Accounting Policies (Earnings Per Common Share) (Details) - USD ($) $ / shares in Units, $ in Thousands			3 Months Ended		9 Months Ended
		May 28, 2020	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Basic
Net income			$ 10,186	$ 2,617	$ 22,260	$ 6,578
Accretion of discount and value of warrants exercised related to Series B preferred stock	[1]			36		219
Earnings allocated to participating securities (Series C preferred stock)	[2]				(2,289)
Net income attributable to common stockholders			$ 10,186	$ 2,653	$ 19,971	$ 6,797
Weighted average common shares outstanding including unvested share-based payment awards			6,563,264	4,488,399	5,907,395	4,419,444
Less: Unvested share-based payment awards-2019 Plan			(47,875)		(42,202)
Average shares			6,515,389	4,488,399	5,865,193	4,419,444
Basic earnings per common share			$ 1.56	$ 0.59	$ 3.41	$ 1.54
Diluted
Net earnings allocated to common stockholders			$ 10,186	$ 2,653	$ 19,971	$ 6,797
Weighted average common shares outstanding for basic earnings per common share			6,515,389	4,488,399	5,865,193	4,419,444
Add: Dilutive effects of assumed exercises of stock options			33,732	37,050	28,305	37,067
Add: Dilutive effects of assumed exercises of stock warrants						9,262
Add: Dilutive effects of unvested share-based payment awards-2019 Plan			47,875		42,202
Average shares and dilutive potential common shares			6,596,996	4,525,449	5,935,700	4,465,773
Diluted earnings per common share			$ 1.54	$ 0.59	$ 3.36	$ 1.52
Series C Preferred Stock [Member]
Diluted
Number of shares converted		12,607
Shares issued upon conversion		12,607
Non-Voting Common Stock [Member]
Diluted
Shares issued upon conversion		1,260,700

[1] All outstanding warrants expired on July 15, 2019.

[2] All 12,607 outstanding shares of Series C preferred stock were converted into a total of 1,260,700 shares of the Company's Non-Voting Common Stock effective as of the close of business on May 28, 2020.