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Equity Based Plans (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Mar. 17, 2016	Mar. 16, 2016
Share-based Compensation [Abstract]
Number of shares authorized (in shares)	2,700,000
Number of common shares available for grant (in shares)	309,480
Shares outstanding for which restrictions had not lapsed (in shares)	150,771	152,926
Restricted Stock [Member]
Share-based Compensation [Abstract]
Compensation expense	$ 6,985	$ 5,939	$ 5,032
Compensation not yet recognized	$ 9,200
Amended 2003 Plan [Member]
Share-based Compensation [Abstract]
Number of shares authorized (in shares)	2,100,000			2,100,000	1,750,000
Number of common shares available for grant (in shares)	301,705
Employees [Member]
Share-based Compensation [Abstract]
Restricted period on the stock granted	4 years
Executive Officer [Member]
Share-based Compensation [Abstract]
Restricted period on the stock granted	4 years
Maximum [Member]
Share-based Compensation [Abstract]
Restrictions will lapse in	2023
Maximum [Member] | Non Qualified Stock Options [Member]
Share-based Compensation [Abstract]
Number of shares authorized (in shares)	600,000
Maximum [Member] | Amended 2003 Plan [Member]
Share-based Compensation [Abstract]
Number of common shares available for grant (in shares)	2,100,000
Minimum [Member]
Share-based Compensation [Abstract]
Restrictions will lapse in	2020

X

- Definition

Amount of expense for award under share-based payment arrangement. Excludes amount capitalized.

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