Capital Stock (Tables)

12 Months Ended

Dec. 31, 2019

Stockholders' Equity Note [Abstract]

Schedule of cash dividends declared

The Board of Directors declared the following cash dividends in 2019, 2018, and 2017:

Date of Declaration	Dividend per Common Share	Payable to Shareholders of Record on	Payment Date	Total Amount
2019
February 20, 2019	$0.30	March 11, 2019	March 29, 2019	$	9,146,357
April 30, 2019	$0.30	June 10, 2019	June 28, 2019	$	9,204,804
July 30, 2019	$0.30	September 16, 2019	September 30, 2019	$	9,230,801
November 5, 2019	$0.30	December 16, 2019	December 31, 2019	$	9,228,656
Total	$1.20			$	36,810,618
2018
February 22, 2018	$0.30	March 12, 2018	March 30, 2018	$	9,049,476
May 1, 2018	$0.30	June 11, 2018	June 29, 2018	$	9,066,023
August 1, 2018	$0.30	September 10, 2018	September 28, 2018	$	9,080,519
November 7, 2018	$0.30	December 14, 2018	December 28, 2018	$	9,088,542
Total	$1.20			$	36,284,560
2017
February 14, 2017	$0.30	March 13, 2017	March 31, 2017	$	8,878,147
May 2, 2017	$0.30	June 12, 2017	June 30, 2017	$	8,917,471
August 1, 2017	$0.30	September 11, 2017	September 29, 2017	$	8,943,279
November 1, 2017	$0.30	December 15, 2017	December 28, 2017	$	8,974,196
November 1, 2017	$0.50	December 15, 2017	December 28, 2017	$	14,956,994
Total	$1.70			$	50,670,087