Stock-Based Compensation (Restricted Shares) (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018	Jun. 03, 2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrestricted Stock Granted to Employees		11,112		11,112
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition			2 years 2 days
Share-based Payment Arrangement, Expense	$ 950,000	$ 579,000	$ 3,088,000	$ 2,089,000
Performance Shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Payment Arrangement, Expense	$ 46,000	62,000	$ 96,000	188,000
Time-Based Vesting | Restricted Shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Shares Issued in Period			16,153
Number of Shares (in shares)
Outstanding at January 1			43,679
Released			22,750
Forfeited			4,852
September 30, 2019	32,230		32,230
Weighted - Average Grant Date Fair Value (in dollars per share)
Outstanding at January 1			$ 29.64
Awarded			31.35
Released			24.70
Forfeited			35.87
September 30, 2019	$ 33.05		$ 33.05
Performance-Based Vesting | Restricted Shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Shares Issued in Period			117,773
Number of Shares (in shares)
Outstanding at January 1			175,772
Awarded			117,773
Released			33,400
Forfeited			5,388
September 30, 2019	254,757		254,757
Weighted - Average Grant Date Fair Value (in dollars per share)
Outstanding at January 1			$ 31.08
Awarded			32.20
Released			17.86
Forfeited			33.17
September 30, 2019	$ 33.29		$ 33.29
Treasury Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares Issued, Value, Share-based Payment Arrangement, after Forfeiture				388,000
Treasury Stock | Director [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares Issued, Value, Share-based Payment Arrangement, after Forfeiture			$ 102,000	128,000
FIRST PRESTONSBURG BANCSHARES INC. [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrestricted Stock Granted to Employees					880
FIRST PRESTONSBURG BANCSHARES INC. [Member] | Treasury Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares Issued, Value, Share-based Payment Arrangement, after Forfeiture	$ 27,000
Employee Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Payment Arrangement, Expense	$ 16,000	$ 15,000	$ 48,000	$ 44,000