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Equity-Based Compensation Plan (Tables)
12 Months Ended
Dec. 31, 2019
Equity-Based Compensation Plan [Abstract]  
Schedule Of Share Based Compensation Shares Authorized Under Stock Option Plans By Exercise Price Range [Text Block]
Year Ended December 31,
201920182017
Weighted Weighted Weighted
NumberAverageNumberAverageNumberAverage
OfExerciseOfExerciseOfExercise
Options Price Options Price Options Price
Beginning of year739,326 $ 14.28845,619 $ 14.14917,269 $ 14.08
Options granted------
Options exercised(105,032)12.32(101,268)13.41(71,150)12.96
Options forfeited--(5,025)17.08(500)15.23
End of year634,294 $ 14.60739,326 $ 14.28845,619 $ 14.14

Outstanding Exercisable
Weighted
Average
WeightedContract LifeWeighted
Number ofAverageRemainingNumber ofAverage
Range of Exercise PricesOptionsExercise Price(Years)OptionsExercise Price
$5.63 to $8.45---3,5328.28
11.27 to 14.08233,99411.881.5313,39411.81
14.09 to 16.90244,62515.393.7228,62515.29
16.91 to 19.71155,67517.005.278,36217.44
634,294$14.603.9623,913$13.77
Aggregate Intrinsic Value $5,714,603$1,754,258
Schedule Of Sharebased Compensation Restricted Stock And Restricted Stock Units Activity [Table Text Block]
Year Ended December 31,
201920182017
Weighted Weighted Weighted
Average Average Average
RestrictedGrant DateRestrictedGrant DateRestrictedGrant Date
Units Fair Value Units Fair Value Units Fair Value
Beginning of year254,050$12.50105,800$14.1959,800$16.64
Restricted units granted125,10021.36176,25012.1283,00013.31
Restricted units lapsed--(24,017)17.12(33,100)16.10
Restricted units forfeited--(3,983)12.48(3,900)16.79
End of year379,150$15.32254,050$12.50105,800$14.19