Derivative and Hedging Activities (Assets and liabilities measured at fair value) (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Derivative [Line Items]
In the next 12 months will be reclassified as an increase to interest expense	$ 1,500
Interest Rate Swap | Fair Value, Measurements, Recurring
Derivative [Line Items]
Derivative asset		$ 4,931
Derivative liability	(3,865)	(580)
Interest Rate Swap | Quoted Prices in Active Markets for Identical Assets and Liabilities (Level 1) | Fair Value, Measurements, Recurring
Derivative [Line Items]
Derivative asset		0
Derivative liability	0	0
Interest Rate Swap | Significant Other Observable Inputs (Level 2) | Fair Value, Measurements, Recurring
Derivative [Line Items]
Derivative asset		4,931
Derivative liability	(3,865)	(580)
Interest Rate Swap | Significant Unobservable Inputs (Level 3) | Fair Value, Measurements, Recurring
Derivative [Line Items]
Derivative asset		0
Derivative liability	0	0
Interest Rate Swap | Other assets | Designated as Hedging Instrument
Derivative [Line Items]
Derivative asset	0	4,931
Interest Rate Swap | Other liabilities | Designated as Hedging Instrument
Derivative [Line Items]
Derivative liability	(3,865)	$ (580)
Interest Rate Swap Maturing 8/31/2022 | Bank of Montreal | Designated as Hedging Instrument
Derivative [Line Items]
Derivative, notional amount	100,000
Interest Rate Swap Maturing 8/31/2022 | U.S. Bank | Designated as Hedging Instrument
Derivative [Line Items]
Derivative, notional amount	100,000
Interest Rate Swap Maturing 8/31/2022 | Regions Bank | Designated as Hedging Instrument
Derivative [Line Items]
Derivative, notional amount	50,000
Interest Rate Swap Maturing 8/31/2022 | Royal Bank of Canada | Designated as Hedging Instrument
Derivative [Line Items]
Derivative, notional amount	$ 50,000