CONSOLIDATED STATEMENT OF STOCKHOLDERS' EQUITY, (Unaudited) - USD ($)	Total	Common Stock [Member]	Additional Paid In Capital [Member]	Retained Earnings [Member]
Balances at Dec. 31, 2018	$ 336,079,000	$ 491,000	$ 379,975,000	$ (44,387,000)
Increase (Decrease) in Stockholders' Equity
Net income	10,597,000	0	0	10,597,000
Cash dividend declared	(11,822,000)	0	(11,822,000)	0
Issuance of common stock pursuant to public offerings, net	8,503,000	13,000	8,490,000	0
Issuance of common shares pursuant to stock based compensation plan	(6,000)	0	(6,000)	0
Amortization of stock based compensation	87,000	0	87,000	0
Stock Repurchased and Retired During Period, Value	(3,024,000)	(5,000)	(3,019,000)	0
Balances at Mar. 31, 2019	$ 340,414,000	499,000	373,705,000	(33,790,000)
Common Stock Shares Outstanding, Beginning Balance at Dec. 31, 2018	49,132,000
Increase (Decrease) in Stockholders' Equity
Stock Issued During Period Shares New Issues	1,268,000
Stock Issued During Period Shares Share Based Compensation	7,000
Stock Repurchased and Retired During Period, Shares	(469,000)
Common Stock Shares Outstanding, Ending Balance at Mar. 31, 2019	49,938,000
Balances at Jun. 30, 2019	$ 308,144,000	662,000	418,803,000	(111,321,000)
Balances at Dec. 31, 2019	395,507,000	631,000	414,998,000	(20,122,000)
Increase (Decrease) in Stockholders' Equity
Net income	(91,199,000)	0	0	(91,199,000)
Cash dividend declared	(15,670,000)	0	(15,670,000)	0
Issuance of common stock pursuant to public offerings, net	19,447,000	31,000	19,416,000	0
Issuance of common shares pursuant to stock based compensation plan	0	0	0	0
Amortization of stock based compensation	59,000	0	59,000	0
Stock Repurchased and Retired During Period, Value	0	0	0	0
Balances at Mar. 31, 2020	$ 308,144,000	$ 662,000	$ 418,803,000	$ (111,321,000)
Common Stock Shares Outstanding, Beginning Balance at Dec. 31, 2019	63,061,781
Increase (Decrease) in Stockholders' Equity
Stock Issued During Period Shares New Issues	3,171,000
Stock Issued During Period Shares Share Based Compensation	4,000
Stock Repurchased and Retired During Period, Shares	0
Common Stock Shares Outstanding, Ending Balance at Mar. 31, 2020	66,236,639