Description of Business and Summary of Significant Accounting Policies - Accounting for Stock-Based Compensation - Additional Information (Details) - USD ($) $ / shares in Units, $ in Thousands							12 Months Ended
	Feb. 06, 2023	Mar. 01, 2022	Mar. 01, 2021	Mar. 01, 2020	Jan. 31, 2020	Jul. 08, 2019	Feb. 28, 2023	Feb. 28, 2022	Feb. 28, 2021	Feb. 28, 2015
Description Of Business And Summary Of Significant Accounting Policies [Line Items]
Share-based compensation arrangement by share-based payment award, number of shares available for grant							1,049,275
Employee service share-based compensation, nonvested awards, total compensation cost not yet recognized							$ 0
Non-cash stock-based compensation expense							$ 609	$ 907	$ 1,749
Vested and unissued shares		100,000	100,000	100,000
Shares withheld for taxes		38,663	39,347
2014 Plan [Member]
Description Of Business And Summary Of Significant Accounting Policies [Line Items]
Share-based Compensation arrangement by share-based payment award, equity instruments other than options, grants in period, weighted average grant date fair value							$ 9.00	$ 13.59	$ 7.18
Vested and unissued shares							33,930	197,891	99,697
Weighted Average Grant Date Fair Value, Vested							$ 6.10	$ 5.76	$ 7.21
Patrick M. Lavelle [Member]
Description Of Business And Summary Of Significant Accounting Policies [Line Items]
Annual salary and cash bonus						$ 1,000
Non-cash stock-based compensation expense							$ 91	$ 241	$ 241
Grant of market stock units maximum amount						$ 5,000
Maximum average stock price of grant market stock units						$ 5.49
Maximum increase amount of market stock units award						$ 5,000
Maximum threshold share price increases in value of award						$ 15.00
Estimated Maximum threshold share increases in value of award						333,333
Share-Based compensation arrangement by share based payment award grant of market stock units, vesting percentage		80.00%					20.00%
Percentage of market stock units, remain outstanding							$ 4,000
Beat Kahli [Member]
Description Of Business And Summary Of Significant Accounting Policies [Line Items]
Annual salary	$ 300
Common Class A [Member] | Patrick M. Lavelle [Member]
Description Of Business And Summary Of Significant Accounting Policies [Line Items]
Award vesting period						5 years
Grant of initial shares under employment agreement		61,337	60,653		100,000
Common Class A [Member] | Patrick M. Lavelle [Member] | 2012 Plan [Member]
Description Of Business And Summary Of Significant Accounting Policies [Line Items]
Share-based Compensation arrangement by share-based payment award, equity instruments other than options, grants in period, weighted average grant date fair value							$ 4.15
Grant of initial shares under employment agreement						200,000
Share based compensation related to additional stock grants							$ 0	$ 157	$ 409
Common Class A [Member] | Patrick M. Lavelle [Member] | 2012 Plan [Member] | March 1, 2021 [Member]
Description Of Business And Summary Of Significant Accounting Policies [Line Items]
Additional grant of shares under employment agreement						100,000
Common Class A [Member] | Patrick M. Lavelle [Member] | 2012 Plan [Member] | March 1, 2020 [Member]
Description Of Business And Summary Of Significant Accounting Policies [Line Items]
Additional grant of shares under employment agreement						100,000
Common Class A [Member] | Patrick M. Lavelle [Member] | 2012 Plan [Member] | March 1, 2022 [Member]
Description Of Business And Summary Of Significant Accounting Policies [Line Items]
Additional grant of shares under employment agreement						100,000
Common Class A [Member] | Beat Kahli [Member]
Description Of Business And Summary Of Significant Accounting Policies [Line Items]
Share-based Compensation arrangement by share-based payment award, equity instruments other than options, grants in period, weighted average grant date fair value	$ 10.66
Common Class A [Member] | Beat Kahli [Member] | June 30, 2023 [Member]
Description Of Business And Summary Of Significant Accounting Policies [Line Items]
Additional grant of shares under employment agreement	20,000
Common Class A [Member] | Beat Kahli [Member] | September 30, 2023 [Member]
Description Of Business And Summary Of Significant Accounting Policies [Line Items]
Additional grant of shares under employment agreement	20,000
Common Class A [Member] | Beat Kahli [Member] | December 31, 2023 [Member]
Description Of Business And Summary Of Significant Accounting Policies [Line Items]
Additional grant of shares under employment agreement	20,000
Common Class A [Member] | Beat Kahli [Member] | March 31, 2024 [Member]
Description Of Business And Summary Of Significant Accounting Policies [Line Items]
Additional grant of shares under employment agreement	20,000
Incentive Stock Options [Member]
Description Of Business And Summary Of Significant Accounting Policies [Line Items]
Percentage of stockholders granted exercise price							10.00%
Incentive Stock Options [Member] | Common Class A [Member]
Description Of Business And Summary Of Significant Accounting Policies [Line Items]
Percentage of fair market value of stock allowed for exercise price of options to be granted							110.00%
Employee Stock Option [Member]
Description Of Business And Summary Of Significant Accounting Policies [Line Items]
Share-based compensation arrangement by share-based payment award, options, grants in period, gross							0	0	0
Allocated share-based compensation expense							$ 0	$ 0	$ 0
Restricted Stock Units [Member]
Description Of Business And Summary Of Significant Accounting Policies [Line Items]
Share-based compensation arrangement by share-based payment award, expiration period										3 years
Allocated share-based compensation expense							609	$ 907	$ 1,749
Employee service share-based compensation, nonvested awards, total compensation cost not yet recognized							$ 1,270
Stock issued during period, shares, restricted stock award, gross							46,556	48,527	48,269
Share-based Compensation arrangement by share-based payment award, equity instruments other than options, grants in period, weighted average grant date fair value							$ 8.28	$ 13.59	$ 5.76
Share-based payment award vesting age of employee										65 years
Restricted Stock Units [Member] | 2014 Plan [Member]
Description Of Business And Summary Of Significant Accounting Policies [Line Items]
Vested and unissued shares							8,634		105,123
Amount of vested and settled awards in cash							$ 81		$ 575
Unissued Restricted Stock Unit Awards [Member] | 2014 Plan [Member]
Description Of Business And Summary Of Significant Accounting Policies [Line Items]
Vested and unissued shares							501,505
Weighted Average Grant Date Fair Value, Vested							$ 6.79
Minimum [Member] | All Other Options and Stock Appreciation Rights [Member]
Description Of Business And Summary Of Significant Accounting Policies [Line Items]
Percentage of fair market value of stock allowed for exercise price of options to be granted							100.00%
Minimum [Member] | All Other Options and Stock Appreciation Rights [Member] | Common Class A [Member]
Description Of Business And Summary Of Significant Accounting Policies [Line Items]
Percentage of fair market value of stock allowed for exercise price of options to be granted							100.00%
Maximum [Member]
Description Of Business And Summary Of Significant Accounting Policies [Line Items]
Share-based compensation arrangement by share-based payment award, expiration period							10 years
Maximum [Member] | Restricted Stock Units [Member]
Description Of Business And Summary Of Significant Accounting Policies [Line Items]
Share-based payment award vesting required service period										10 years