Off-Balance Sheet Arrangements, Commitments And Contingencies - Litigation (Details) $ in Thousands	Jun. 30, 2017 USD ($)
Financial instruments with off-balance sheet risk
1 year of less	$ 344,592
More than 1 year but less than 3 years	186,261
3 years or more but less than 5 years	60,114
5 years or more	57,452
Total	648,419
Commitments to Extend Credit [Member]
Financial instruments with off-balance sheet risk
1 year of less	337,318
More than 1 year but less than 3 years	183,778
3 years or more but less than 5 years	59,951
5 years or more	56,652
Total	637,699
Unused lines of Credit [Member]
Financial instruments with off-balance sheet risk
1 year of less	7,274
More than 1 year but less than 3 years	2,483
3 years or more but less than 5 years	163
5 years or more	800
Total	$ 10,720