Quarterly report pursuant to Section 13 or 15(d)

Securities - Securities with gross unrealized losses (Details)

v3.19.2
Securities - Securities with gross unrealized losses (Details)
Jun. 30, 2019
USD ($)
Dec. 31, 2018
USD ($)
Schedule of Available-for-sale Securities [Line Items]    
Estimated Fair Value, Less than 12 months $ 0 $ 51,066,000
Unrealized Losses, Less than 12 months 0 (671,000)
Estimated Fair Value, 12 months or longer 37,018,000 98,644,000
Unrealized Losses, 12 months or longer (1,709,000) (4,104,000)
Estimated Fair Value, Total 37,018,000 149,710,000
Unrealized Losses, Total $ (1,709,000) $ (4,775,000)
Number of securities, Unrealized Losses, Less than 12 months 0 52
Number of securities, Unrealized Losses, 12 months or longer 31 75
Number of securities, Unrealized Losses, Total 31 127
US Government-sponsored Enterprises Debt Securities [Member]    
Schedule of Available-for-sale Securities [Line Items]    
Estimated Fair Value, Less than 12 months $ 0 $ 0
Unrealized Losses, Less than 12 months 0 0
Estimated Fair Value, 12 months or longer 0 3,866,000
Unrealized Losses, 12 months or longer 0 (131,000)
Estimated Fair Value, Total 0 3,866,000
Unrealized Losses, Total 0 (131,000)
Collateralized mortgage obligations and residential mortgage-backed securities [Member]    
Schedule of Available-for-sale Securities [Line Items]    
Estimated Fair Value, Less than 12 months 0 28,388,000
Unrealized Losses, Less than 12 months 0 (304,000)
Estimated Fair Value, 12 months or longer 34,364,000 89,234,000
Unrealized Losses, 12 months or longer (273,000) (2,384,000)
Estimated Fair Value, Total 34,364,000 117,622,000
Unrealized Losses, Total (273,000) (2,688,000)
Collateralized Debt Obligations [Member]    
Schedule of Available-for-sale Securities [Line Items]    
Estimated Fair Value, Less than 12 months 0 0
Unrealized Losses, Less than 12 months 0 0
Estimated Fair Value, 12 months or longer 2,047,000 2,049,000
Unrealized Losses, 12 months or longer (1,408,000) (1,432,000)
Estimated Fair Value, Total 2,047,000 2,049,000
Unrealized Losses, Total (1,408,000) (1,432,000)
Municipal Bonds [Member]    
Schedule of Available-for-sale Securities [Line Items]    
Estimated Fair Value, Less than 12 months 0 22,678,000
Unrealized Losses, Less than 12 months 0 (367,000)
Estimated Fair Value, 12 months or longer 607,000 3,495,000
Unrealized Losses, 12 months or longer (28,000) (157,000)
Estimated Fair Value, Total 607,000 26,173,000
Unrealized Losses, Total $ (28,000) $ (524,000)