Derivative Instruments and Hedging Activity (Details) - USD ($) $ in Thousands	1 Months Ended						3 Months Ended		6 Months Ended
	May 31, 2021	Aug. 31, 2020	Oct. 31, 2019	Dec. 31, 2018	Jun. 30, 2016	Jul. 31, 2014	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020	Jul. 26, 2021	Feb. 28, 2021	Dec. 31, 2020	Feb. 29, 2020	Jun. 30, 2019
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Realized gain (loss) on settlement of interest rate swaps							$ 287	$ (17)	$ 787	$ (33)
Derivative Instruments, Gain (Loss) Reclassification from Accumulated OCI to Income, Estimated Net Amount to be Transferred									300
Accelerated loss out of OCI									13,400
Derivative, Net Liability Position, Aggregate Fair Value							4,100		4,100
Interest Rate Swap Agreement, in February 2020 [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative, Notional Amount														$ 100,000
Realized gain (loss) on settlement of interest rate swaps		$ (7,300)
Interest Rate Swap Agreement In August 2020 [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative, Notional Amount		100,000
Realized gain (loss) on settlement of interest rate swaps	$ 8,000
Interest Rate Swap Agreement In December 2020 [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative, Notional Amount													$ 100,000
Realized gain (loss) on settlement of interest rate swaps	5,600
Interest Rate Swap Agreement, in July 2014 [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative, Notional Amount						$ 65,000
Realized gain (loss) on settlement of interest rate swaps	(300)
Description of Interest Rate Cash Flow Hedge Activities						the Company received from the counterparty interest on the notional amount based on one month LIBOR and pays to the counterparty a fixed rate of 2.09%
Fixed interest rate						2.09%
Derivative, Amount of Hedged Item						$ 65,000
Derivative, Inception Date						Jul. 21, 2014
Derivative, Maturity Date						Jul. 21, 2021
Interest Rate Swap Agreement, in June 2016 [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative, Notional Amount					$ 40,000
Realized gain (loss) on settlement of interest rate swaps	(1,000)
Description of Interest Rate Cash Flow Hedge Activities					the Company received from the counterparty interest on the notional amount based on one month LIBOR and pays to the counterparty a fixed rate of 1.40%
Fixed interest rate					1.40%
Derivative, Amount of Hedged Item					$ 40,000
Derivative, Inception Date					Aug. 01, 2016
Derivative, Maturity Date					Jul. 01, 2023
Interest Rate Swap Agreement, in December 2018 [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative, Notional Amount				$ 100,000
Realized gain (loss) on settlement of interest rate swaps	(9,200)
Description of Interest Rate Cash Flow Hedge Activities				the Company received from the counterparty interest on the notional amount based on one month LIBOR and pays to the counterparty a fixed rate of 2.66%
Fixed interest rate				2.66%
Derivative, Amount of Hedged Item				$ 100,000
Derivative, Inception Date				Dec. 27, 2018
Derivative, Maturity Date				Jan. 15, 2026
Interest Rate Swap Agreement, in June 2019 [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative, Notional Amount															$ 100,000
Realized gain (loss) on settlement of interest rate swaps		$ (16,100)
Interest Rate Swap Agreement, Sixty-Five Million in October 2019 [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative, Notional Amount			$ 65,000
Realized gain (loss) on settlement of interest rate swaps	(1,800)
Description of Interest Rate Cash Flow Hedge Activities			the Company received from the counterparty interest on the notional amount based on 1 month LIBOR and pays to the counterparty a fixed rate of 1.4275%
Fixed interest rate			1.4275%
Derivative, Amount of Hedged Item			$ 65,000
Derivative, Inception Date			Jul. 12, 2021
Derivative, Maturity Date			Jan. 12, 2024
Interest Rate Swap Agreement, Thirty-Five Million in October 2019 [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative, Notional Amount			$ 35,000
Realized gain (loss) on settlement of interest rate swaps	(1,100)
Description of Interest Rate Cash Flow Hedge Activities			the Company receives from the counterparty interest on the notional amount based on 1 month LIBOR and pays to the counterparty a fixed rate of 1.4265%
Fixed interest rate			1.4265%
Derivative, Amount of Hedged Item			$ 35,000
Derivative, Inception Date			Sep. 29, 2020
Derivative, Maturity Date			Jan. 12, 2024
Interest Rate Swap Agreement, in February 2021 [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative, Notional Amount												$ 100,000
Realized gain (loss) on settlement of interest rate swaps	3,100
Interest Rate Swap Agreement in May 2021 [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative, Notional Amount	$ 200,000
Fair Value, Net Asset (Liability)							$ (4,100)		$ (4,100)
Interest Rate Swap Agreement In July 2021 [Member] | Subsequent Event [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative, Notional Amount											$ 100,000