Statements of Stockholders' Equity - USD ($) $ in Thousands	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	AOCI Attributable to Parent [Member]	Total
Balances (in shares) at Dec. 31, 2020	15,215,000
Balances at Dec. 31, 2020	$ 152	$ 433,133	$ (17,994)	$ 0	$ 415,291
Net income (loss)	0	0	(64,760)	0	(64,760)
Cash dividends declared	$ 0	(97,601)	0	0	(97,601)
Issuance of common stock pursuant to public offerings, net (in shares)	20,166,000
Issuance of common stock pursuant to public offerings, net	$ 202	513,857	0	0	514,059
Stock based awards and amortization (in shares)	18,000
Stock based awards and amortization	$ 0	1,108	0	0	1,108
Shares repurchased and retired (in shares)	0
Shares repurchased and retired	$ 0	0	0	0	0
Unrealized gain on available-for-sale securities					$ 0
Balances (in shares) at Dec. 31, 2021	35,399,000				35,399,000
Balances at Dec. 31, 2021	$ 354	850,497	(82,754)	0	$ 768,097
Net income (loss)	0	0	(258,453)	0	(258,453)
Cash dividends declared	$ 0	(87,906)	0	0	$ (87,906)
Issuance of common stock pursuant to public offerings, net (in shares)	3,885,000				3,885,048	[1]
Issuance of common stock pursuant to public offerings, net	$ 38	40,542	0	0	$ 40,580	[2]
Stock based awards and amortization (in shares)	30,000
Stock based awards and amortization	$ 0	1,055	0	0	1,055
Shares repurchased and retired (in shares)	(2,549,000)
Shares repurchased and retired	$ (24)	(24,586)	0	0	(24,610)
Unrealized gain on available-for-sale securities					$ 0
Balances (in shares) at Dec. 31, 2022	36,765,000				36,765,000
Balances at Dec. 31, 2022	$ 368	779,602	(341,207)	0	$ 438,763
Net income (loss)	0	0	(39,226)	0	(39,226)
Cash dividends declared	$ 0	(81,127)	0	0	$ (81,127)
Issuance of common stock pursuant to public offerings, net (in shares)	15,880,000				15,880,039	[1]
Issuance of common stock pursuant to public offerings, net	$ 157	159,281	0	0	$ 159,438	[2]
Stock based awards and amortization (in shares)	64,000
Stock based awards and amortization	$ 1	1,503	0	0	1,504
Shares repurchased and retired (in shares)	(1,073,000)
Shares repurchased and retired	$ (10)	(9,414)	0	0	(9,424)
Unrealized gain on available-for-sale securities	$ 0	0	0	17	$ 17
Balances (in shares) at Dec. 31, 2023	51,636,000				51,636,000
Balances at Dec. 31, 2023	$ 516	$ 849,845	$ (380,433)	$ 17	$ 469,945

[1] As of December 31, 2023, the Company had entered into eleven equity distribution agreements, ten of which have either been terminated because all shares were sold or were replaced with a subsequent agreement.

[2] Net proceeds are net of the underwriters' discount, if applicable, and other offering costs.