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Shareholders Equity - Purchases of Equity Shares (Details) - USD ($) $ / shares in Units, $ in Millions			1 Months Ended					6 Months Ended
	Jan. 01, 2021	May 20, 2019	Jun. 30, 2021	May 31, 2021	Apr. 30, 2021	Mar. 31, 2021	Feb. 28, 2021	Jun. 30, 2021	Dec. 31, 2020
Shareholders' Equity
Authorized shares to be repurchased	1,193,000	1,367,762	928,785					928,785	1,193,000
Shares repurchased as a percentage of outstanding common shares	5.00%	5.00%
Authorized amount repurchase		$ 5.0
Number of shares purchased			13,800	63,900	63,315	60,800	62,400	264,215
Average price paid per share			$ 4.77	$ 4.02	$ 3.89	$ 3.92	$ 4.07	$ 4.02

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- Definition

Represents the shares repurchased representing the percentage of outstanding common shares.

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- Definition

Amount of stock repurchase plan authorized.

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- Definition

The number of shares authorized to be repurchased by an entity's Board of Directors under a stock repurchase plan.

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- Definition

Total cost of shares repurchased divided by the total number of shares repurchased.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 30
-Section 45
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Number of shares that have been repurchased during the period and are being held in treasury.

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-Topic 505
-SubTopic 10
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