Annual report pursuant to Section 13 and 15(d)

CONSOLIDATED STATEMENT OF CHANGES IN SHAREHOLDERS??? EQUITY

CONSOLIDATED STATEMENT OF CHANGES IN SHAREHOLDERS’ EQUITY - USD ($) $ in Thousands	Total	Advisory Board And Consultants	Employees	Preferred Stock	Common Stock	Additional Paid-in Capital	Additional Paid-in Capital Advisory Board And Consultants	Additional Paid-in Capital Employees	Accumulated Deficit	Noncontrolling Interest
Beginning Balance (in shares) at Dec. 31, 2016				15,844,916	194,057,738
Beginning Balance at Dec. 31, 2016	$ 362,501			$ 1	$ 19	$ 519,879			$ (157,425)	$ 27
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common stock under employee stock purchase plan (in shares)					167,016
Issuance of common stock under employee stock purchase plan	420					420
Exercise of stock options (in shares)					2,661,647
Exercise of stock options	4,826				$ 1	4,825
Exercise of warrants (in shares)					2,000,000
Exercise of warrants	3,820					3,820
Stock-based compensation		$ 57	$ 5,482				$ 57	$ 5,482
Issuance of restricted stock (in shares)					1,791,000
Restricted stock forfeitures (in shares)					(5,000)
Repurchase and retirement of common stock (in shares)					(2,088,460)
Repurchase and retirement of common stock	(5,293)					(5,293)
Repurchase of option award for cash	(850)					(850)
Preferred stock issued, net of underwriting discount and expense (in shares)				1,167,159
Preferred stock issued, net of underwriting discount and expense	28,095			$ 1		28,094
Preferred stock dividends declared and paid	(32,482)					(32,482)
Commons stock dividends declared and paid	(3,880)					(3,880)
Net income (loss)	7,682								7,697	(15)
Ending Balance (in shares) at Dec. 31, 2017				17,012,075	198,583,941
Ending Balance at Dec. 31, 2017	370,391			$ 2	$ 20	520,135			(149,778)	12
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance, adjusted	395,176			$ 2	$ 20	520,135			(125,004)	23
Issuance of common stock under employee stock purchase plan (in shares)					161,968
Issuance of common stock under employee stock purchase plan	453					453
Exercise of stock options (in shares)					3,199,511
Exercise of stock options	3,813					3,813
Stock-based compensation		34	5,848				34	5,848
Issuance of restricted stock (in shares)					2,172,000
Restricted stock forfeitures (in shares)					(106,250)
Repurchase and retirement of common stock (in shares)					(57,475,374)
Repurchase and retirement of common stock	(139,835)				$ (6)	(139,829)
Repurchase of option award for cash	(3,000)					(3,000)
Preferred stock issued, net of underwriting discount and expense	(273)					(273)
Preferred stock dividends declared and paid	(34,031)					(34,031)
Commons stock dividends declared and paid	(8,794)					(8,794)
Net income (loss)	33,786								33,758	28
Ending Balance (in shares) at Dec. 31, 2018				17,012,075	146,535,796
Ending Balance at Dec. 31, 2018	253,177			$ 2	$ 14	344,356			(91,246)	51
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common stock under employee stock purchase plan (in shares)					159,212
Issuance of common stock under employee stock purchase plan	447					447
Exercise of stock options (in shares)					3,100,261
Exercise of stock options	2,331					2,331
Stock-based compensation		$ 23	$ 6,083				$ 23	$ 6,083
Issuance of restricted stock (in shares)					2,785,000
Issuance of restricted stock	1				$ 1
Restricted stock forfeitures (in shares)					(82,500)
Repurchase and retirement of common stock (in shares)					(3,186,510)
Repurchase and retirement of common stock	(10,880)					(10,880)
Preferred stock issued, net of underwriting discount and expense (in shares)				389,207
Preferred stock issued, net of underwriting discount and expense	9,426					9,426
Preferred stock dividends declared and paid	(34,689)					(34,689)
Commons stock dividends declared and paid	(7,179)					(7,179)
Net income (loss)	22,725								22,767	(42)
Ending Balance (in shares) at Dec. 31, 2019				17,401,282	149,311,259
Ending Balance at Dec. 31, 2019	$ 241,465			$ 2	$ 15	$ 309,918			$ (68,479)	$ 9