Acquisition Activity - Summary of Carrying Amount and Fair Value Adjustments of Loans Acquired from TPB (Details) $ in Thousands	Aug. 31, 2018 USD ($)
Business Acquisition [Line Items]
Purchased performing loans	$ 151,746
Purchased credit impaired loans	2,831
Total purchased loans	154,577
The Peoples Bank [Member]
Business Acquisition [Line Items]
Purchased performing loans	153,862
Purchased credit impaired loans	2,910
Total purchased loans	156,772
Purchased performing loans	(2,116)
Purchased credit impaired loans	(79)
Total purchased loans	$ (2,195)