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Common Stock (Details) - USD ($) $ / shares in Units, $ in Thousands					3 Months Ended		9 Months Ended
	Oct. 29, 2020	Sep. 09, 2020	Jun. 10, 2020	Mar. 13, 2020	Sep. 30, 2020	Jun. 30, 2020	Sep. 30, 2020	Sep. 30, 2019	Jul. 08, 2020	Jul. 07, 2020	Dec. 31, 2019
Common stock dividends
Dividend declared Share (in dollars per share)		$ 0.45	$ 0.45	$ 0.45
Total Dividend		$ 9,198	$ 9,068	$ 9,036
Percentage of dividend paid in cash		75.00%	50.00%	100.00%
Percentage of dividend paid in stock		25.00%	50.00%
Cash Issued		$ 6,898	$ 4,537	$ 9,036			$ 22,540	$ 26,478
Stock Issued	141,000	141,000	263,000
Stock distributions per share of common stock		$ 16.27	$ 17.22		$ 0.112	$ 0.225	$ 0.337
Common stock, shares issued					19,737,000		19,737,000				19,251,000
Common stock, shares outstanding					19,737,000		19,737,000				19,251,000
Common stock, shares authorized					50,000,000		50,000,000		50,000,000	25,000,000	25,000,000
Including issuance of stock dividend
Common stock dividends
Common stock, shares issued					19,878,000		19,878,000
Common stock, shares outstanding					19,878,000		19,878,000

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Aggregate value of stock dividends paid during the period for each share of common stock outstanding.

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The aggregate amount of common stock dividends paid, including cash dividends and stock dividends.

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Aggregate dividends declared during the period for each share of common stock outstanding.

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Number of shares of common stock issued as dividends during the period. Excludes stock splits.

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The maximum number of common shares permitted to be issued by an entity's charter and bylaws.

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Total number of common shares of an entity that have been sold or granted to shareholders (includes common shares that were issued, repurchased and remain in the treasury). These shares represent capital invested by the firm's shareholders and owners, and may be all or only a portion of the number of shares authorized. Shares issued include shares outstanding and shares held in the treasury.

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Number of shares of common stock outstanding. Common stock represent the ownership interest in a corporation.

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Amount of cash outflow in the form of ordinary dividends to common shareholders of the parent entity.

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