Stock-Based Compensation Plans ESPP (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Share-based Payment Arrangement [Abstract]
Percentage of fair value at purchase date	85.00%
Discount from market price, purchase date	15.00%
ESPP shares purchased	194,485	136,576	110,200
Average purchase price per share (85% of market value)	$ 10.02	$ 14.03	$ 14.74
Compensation expense recognized (in thousands)	$ 344	$ 338	$ 287

Employee Stock Purchase Plan Average Purchase Price Per Share

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- Definition

Share Based Compensation Arrangement By Share Based Payment Award Percentage Of Fair Value At Purchase Date

+ References

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- Definition

The amount of plan compensation cost recognized during the period.

+ References

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- Definition

Discount rate from fair value on purchase date that participants pay for shares.

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- Definition

Number of shares issued during the period as a result of an employee stock purchase plan.

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