Quarterly Financial Data (unaudited) (Tables)

12 Months Ended

Dec. 31, 2020

Quarterly Financial Information Disclosure [Abstract]

Quarterly Financial Data

	First			Second			Third		Fourth
2020
Total revenues	$	33,079		$	32,384		$	40,003	$	44,133
Net income (loss)		(2,356	)		2,175			4,996		51,386
Net income (loss) per common share, basic		(0.01	)		0.01			0.03		0.31
Net income (loss) per common share, diluted		(0.01	)		0.01			0.03		0.30
Weighted average shares, basic		165,429			165,703			166,375		166,744
Weighted average shares, diluted		165,429			169,228			169,655		171,412
2019
Total revenues	$	23,286		$	28,433		$	34,306	$	37,839
Net income (loss)		(5,539	)		(2,226	)		1,043		4,695
Net income (loss) per common share, basic and diluted		(0.03	)		(0.01	)		0.01		0.03
Weighted average shares, basic		160,446			162,734			163,119		163,952
Weighted average shares, diluted		160,446			162,734			168,503		171,238