Significant Accounting Policies (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
	Mar. 31, 2019	Sep. 30, 2020	Sep. 30, 2019	Dec. 31, 2019
New Accounting Pronouncement [Abstract]
Impact of ASU adoption on retained earnings		$ 399,835		$ 362,515
Increase to other assets		$ 1,360	$ 1,265
ASU 2016-02 [Member]
New Accounting Pronouncement [Abstract]
Increase to other assets	$ 650
Increase to lease liability obligations	756
ASU 2016-02 [Member] | Cumulative Effect, Period of Adoption, Adjustment [Member]
New Accounting Pronouncement [Abstract]
Impact of ASU adoption on retained earnings	$ (106)