Consolidated Statements of Changes in Stockholders' Equity - USD ($) $ in Thousands	Common Stock	Additional Paid-in Capital	(Deficit) Retained Earnings	Accumulated Other Comprehensive Income (Loss)	Treasury Stock	Total
Balance at beginning of period at Nov. 30, 2019	$ 57	$ 113,256	$ 919	$ (3,141)	$ (20,329)	$ 90,762
Balance (in shares) at Nov. 30, 2019	5,668,043
Increase (Decrease) in Stockholders' Equity
Stock-based compensation expense		19				19
Total other comprehensive income (loss), net of tax				601		601
Net (loss) income			(255)			(255)
Balance at end of period at Dec. 31, 2019	$ 57	113,275	664	(2,540)	(20,329)	91,127
Balance (in shares) at Dec. 31, 2019	5,668,043
Increase (Decrease) in Stockholders' Equity
Sale of common stock, net		2,500				2,500
Sale of common stock, net (in shares)	53,293
Stock-based compensation expense		122				122
Total other comprehensive income (loss), net of tax				(4,861)		(4,861)
Net (loss) income			(286)			(286)
Balance at end of period at Mar. 31, 2020	$ 57	115,897	378	(7,401)	(20,329)	88,602
Balance (in shares) at Mar. 31, 2020	5,721,336
Balance at beginning of period at Nov. 30, 2020	$ 63	138,372	(11,798)	(8,051)	(21,687)	96,899
Balance (in shares) at Nov. 30, 2020	6,280,856
Increase (Decrease) in Stockholders' Equity
Stock-based compensation expense		41				41
Total other comprehensive income (loss), net of tax				196		196
Net (loss) income			1,981			1,981
Balance at end of period at Dec. 31, 2020	$ 63	138,413	(9,817)	(7,855)	(21,687)	99,117
Balance (in shares) at Dec. 31, 2020	6,280,856
Increase (Decrease) in Stockholders' Equity
Exercise of stock options		6				6
Exercise of stock options (in shares)	233
Sale of common stock, net	$ 19	108,657				108,676
Sale of common stock, net (in shares)	1,927,049
Special dividend	$ 1	7,845	(11,250)			(3,404)
Special dividend (in shares)	125,212
Stock-based compensation expense		214				214
Total other comprehensive income (loss), net of tax				3,479		3,479
Net (loss) income			(768)			(768)
Balance at end of period at Mar. 31, 2021	$ 83	$ 255,135	$ (21,835)	$ (4,376)	$ (21,687)	$ 207,320
Balance (in shares) at Mar. 31, 2021	8,333,350