Condensed Consolidated Statements of Changes in Stockholders' Equity (Unaudited) - USD ($)	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Outside Directors [Member]	Employee Directors [Member]	Total
Balance (in shares)	91,968,000
Balance	$ 9,000	$ 581,426,000	$ (107,209,000)			$ 474,226,000
Balance (in shares) at Dec. 31, 2020	91,968,000
Balance at Dec. 31, 2020	$ 9,000	581,426,000	(107,209,000)			474,226,000
Exercise of warrants (in shares)	554,000
Exercise of warrants	$ 0	5,466,000	0			5,466,000
Shares issued upon options being exercised (in shares)	154,000
Shares issued upon options being exercised	$ 0	1,574,000	0			1,574,000
Compensation costs included in net income	0	966,000	0			966,000
Net income (loss)	$ 0	0	4,744,000			4,744,000
Balance (in shares) at Mar. 31, 2021	92,676,000
Balance at Mar. 31, 2021	$ 9,000	589,432,000	(102,465,000)			486,976,000
Balance (in shares) at Dec. 31, 2020	91,968,000
Balance at Dec. 31, 2020	$ 9,000	581,426,000	(107,209,000)			474,226,000
Net income (loss)						10,487,000
Balance (in shares) at Jun. 30, 2021	92,729,000
Balance at Jun. 30, 2021	$ 9,000	590,455,000	(96,722,000)			493,742,000
Balance (in shares) at Dec. 31, 2020	91,968,000
Balance at Dec. 31, 2020	$ 9,000	581,426,000	(107,209,000)			$ 474,226,000
Shares issued upon options being exercised (in shares)						154,268
Balance (in shares) at Dec. 31, 2021	96,774,000
Balance at Dec. 31, 2021	$ 10,000	617,489,000	(64,436,000)			$ 553,063,000
Balance (in shares)	92,676,000
Balance	$ 9,000	589,432,000	(102,465,000)			486,976,000
Balance (in shares) at Mar. 31, 2021	92,676,000
Balance at Mar. 31, 2021	$ 9,000	589,432,000	(102,465,000)			486,976,000
Compensation costs included in net income	0	1,023,000	0			1,023,000
Net income (loss)	$ 0	0	5,743,000			5,743,000
Restricted shares issued to outside directors (in shares)	53,000
Balance (in shares) at Jun. 30, 2021	92,729,000
Balance at Jun. 30, 2021	$ 9,000	590,455,000	(96,722,000)			493,742,000
Restricted shares issued	$ 0	0	0	$ 0
Balance (in shares)	92,729,000
Balance	$ 9,000	590,455,000	(96,722,000)			493,742,000
Balance (in shares)	96,774,000
Balance	$ 10,000	617,489,000	(64,436,000)			553,063,000
Balance (in shares) at Dec. 31, 2021	96,774,000
Balance at Dec. 31, 2021	$ 10,000	617,489,000	(64,436,000)			553,063,000
Exercise of warrants (in shares)	69,000
Exercise of warrants	$ 0	779,000	0			779,000
Dividends declared	$ 0	0	(2,434,000)			(2,434,000)
Shares issued upon options being exercised (in shares)	8,000
Shares issued upon options being exercised	$ 0	75,000	0			75,000
Dividend equivalents declared on outstanding stock options	0	0	(250,000)			(250,000)
Compensation costs included in net income	$ 0	2,614,000	0			2,614,000
Stock issued for acquisition (in shares)	6,960,000
Stock issued for acquisition	$ 0	156,599,000	0			156,599,000
Net income (loss)	0	0	(16,510,000)			(16,510,000)
Stock issuance costs	$ 0	(55,000)	0			(55,000)
Balance (in shares) at Mar. 31, 2022	103,811,000
Balance at Mar. 31, 2022	$ 10,000	777,501,000	(83,630,000)			693,881,000
Balance (in shares) at Dec. 31, 2021	96,774,000
Balance at Dec. 31, 2021	$ 10,000	617,489,000	(64,436,000)			$ 553,063,000
Shares issued upon options being exercised (in shares)						12,000
Net income (loss)						$ 61,051,000
Balance (in shares) at Jun. 30, 2022	109,227,000
Balance at Jun. 30, 2022	$ 11,000	909,325,000	(8,948,000)			900,388,000
Balance (in shares)	103,811,000
Balance	$ 10,000	777,501,000	(83,630,000)			693,881,000
Balance (in shares) at Mar. 31, 2022	103,811,000
Balance at Mar. 31, 2022	$ 10,000	777,501,000	(83,630,000)			693,881,000
Exercise of warrants (in shares)	897,000
Exercise of warrants	$ 0	6,971,000	0			6,971,000
Dividends declared	$ 0	0	(2,630,000)			(2,630,000)
Shares issued upon options being exercised (in shares)	4,000
Shares issued upon options being exercised	$ 0	45,000	0			45,000
Dividend equivalents declared on outstanding stock options	0	0	(249,000)			(249,000)
Compensation costs included in net income	$ 0	16,429,000	0			16,429,000
Stock issued for acquisition (in shares)	3,894,000
Stock issued for acquisition	$ 1,000	108,382,000	0			108,383,000
Net income (loss)	0	0	77,561,000			77,561,000
Stock issuance costs	$ 0	(3,000)	0			(3,000)
Restricted shares issued to outside directors (in shares)				21,000	600,000
Balance (in shares) at Jun. 30, 2022	109,227,000
Balance at Jun. 30, 2022	$ 11,000	909,325,000	(8,948,000)			900,388,000
Restricted shares issued				$ 0	$ 0
Balance (in shares)	109,227,000
Balance	$ 11,000	$ 909,325,000	$ (8,948,000)			$ 900,388,000