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Note 15 - Share-based Compensation (Details Textual) - USD ($)	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Labor and Related Expense	$ 11,089,000	$ 14,323,000	$ 13,681,000
Restricted Stock [Member]
Share-based Payment Arrangement, Nonvested Award, Excluding Option, Cost Not yet Recognized, Amount	$ 205,000
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition (Year)	3 years 3 months 14 days
2012 Stock Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized (in shares)		3,000,000
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant (in shares)	2,834,617
Share-based Payment Arrangement, Expense	$ 150,000	$ 159,000	214,000
2012 Stock Plan [Member] | Employee [Member]
Share-based Payment Arrangement, Expense	90,000	80,000	117,000
2012 Stock Plan [Member] | Patriot's External Directors [Member]
Share-based Payment Arrangement, Expense	60,000	79,000	97,000
Labor and Related Expense	$ 325,000	$ 429,000	$ 547,000
2012 Stock Plan [Member] | Restricted Stock [Member] | Share-based Payment Arrangement, Tranche Two [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period (Year)	4 years
2012 Stock Plan [Member] | Restricted Stock [Member] | Share-based Payment Arrangement, Tranche Three [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period (Year)	5 years
2012 Stock Plan [Member] | Restricted Stock [Member] | Share-based Payment Arrangement, Tranche One [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period (Year)	3 years

X

- Definition

Amount of expense for award under share-based payment arrangement. Excludes amount capitalized.

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Amount of expense for salary, wage, profit sharing; incentive and equity-based compensation; and other employee benefit.

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