DISCLOSURE OF CHANGES IN NUMBER OF SHARES - shares	6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020
Preferred Stock:
Preferred stock - Balance at beginning of period	885,726	2,006,391
Preferred stock shares redemption	0	(1,120,665)
Preferred stock - Balance at ending of period	885,726	885,726
Common Stock - Issued:
Common stock - balance at beginning of period	104,508,290	104,392,222
Issuance of stock	37,576	49,865
Common stock - balance at end of period	104,545,866	104,442,087
Treasury stock	(23,889,386)	(20,257,160)
Common stock shares outstanding	80,656,480	84,184,927