XML 97 R71.htm IDEA: XBRL DOCUMENT v3.7.0.1
Fair value measurements - Assets and liabilities measured on a recurring basis (Details) - USD ($)
Jun. 30, 2017
Dec. 31, 2016
Jun. 30, 2016
Fair value measurements on a recurring basis      
Available-for-sale investment securities $ 1,302,886,000 $ 1,105,182,000  
Estimated fair value      
Fair value measurements on a recurring basis      
Money market funds   13,085,000  
Available-for-sale investment securities 1,302,886,000 1,105,182,000  
Derivative assets      
Derivative assets 845,000 453,000  
Derivative liabilities      
Derivative liabilities-window forward contracts 246,000 952,000  
Loans 4,842,065,000 4,852,826,000  
Mortgage revenue bond      
Fair value measurements on a recurring basis      
Available-for-sale investment securities 15,427,000 15,427,000  
Level 1 | Estimated fair value      
Fair value measurements on a recurring basis      
Money market funds   0  
Available-for-sale investment securities 0 0  
Derivative assets      
Derivative assets 47,000 0  
Derivative liabilities      
Derivative liabilities-window forward contracts 0 129,000  
Loans 0 0  
Level 2 | Estimated fair value      
Fair value measurements on a recurring basis      
Money market funds   13,085,000  
Available-for-sale investment securities 1,287,459,000 1,089,755,000  
Derivative assets      
Derivative assets 798,000 453,000  
Derivative liabilities      
Derivative liabilities-window forward contracts 246,000 823,000  
Loans 5,261,000 13,333,000  
Level 3 | Estimated fair value      
Fair value measurements on a recurring basis      
Money market funds   0  
Available-for-sale investment securities 15,427,000 15,427,000  
Derivative assets      
Derivative assets 0 0  
Derivative liabilities      
Derivative liabilities-window forward contracts 0 0  
Loans 4,836,804,000 4,839,493,000  
Fair value measurements on a recurring basis | Level 1      
Derivative assets      
Derivative assets 47,000 0  
Derivative liabilities      
Derivative liabilities-window forward contracts 0 129,000  
Fair value measurements on a recurring basis | Level 1 | Interest rate lock commitments      
Derivative assets      
Derivative assets 0 0  
Derivative liabilities      
Derivative liabilities-window forward contracts 0 0  
Fair value measurements on a recurring basis | Level 1 | Forward commitments      
Derivative assets      
Derivative assets 47,000 0  
Derivative liabilities      
Derivative liabilities-window forward contracts 0 129,000  
Fair value measurements on a recurring basis | Level 1 | Window forward contract      
Derivative assets      
Derivative assets 0 0  
Derivative liabilities      
Derivative liabilities-window forward contracts 0 0  
Fair value measurements on a recurring basis | Level 1 | Other      
Fair value measurements on a recurring basis      
Money market funds 0 0  
Fair value measurements on a recurring basis | Level 1 | Bank      
Fair value measurements on a recurring basis      
Available-for-sale investment securities 0 0  
Fair value measurements on a recurring basis | Level 1 | Mortgage-related securities - FNMA, FHLMC and GNMA | Bank      
Fair value measurements on a recurring basis      
Available-for-sale investment securities 0 0  
Fair value measurements on a recurring basis | Level 1 | U.S. Treasury federal agency obligations | Bank      
Fair value measurements on a recurring basis      
Available-for-sale investment securities 0 0  
Fair value measurements on a recurring basis | Level 1 | Mortgage revenue bond | Bank      
Fair value measurements on a recurring basis      
Available-for-sale investment securities 0 0  
Fair value measurements on a recurring basis | Level 2      
Derivative assets      
Derivative assets 798,000 453,000  
Derivative liabilities      
Derivative liabilities-window forward contracts 246,000 823,000  
Fair value measurements on a recurring basis | Level 2 | Interest rate lock commitments      
Derivative assets      
Derivative assets 142,000 445,000  
Derivative liabilities      
Derivative liabilities-window forward contracts 16,000 24,000  
Fair value measurements on a recurring basis | Level 2 | Forward commitments      
Derivative assets      
Derivative assets 41,000 8,000  
Derivative liabilities      
Derivative liabilities-window forward contracts 0 56,000  
Fair value measurements on a recurring basis | Level 2 | Window forward contract      
Derivative assets      
Derivative assets 615,000 0  
Derivative liabilities      
Derivative liabilities-window forward contracts 230,000 743,000  
Fair value measurements on a recurring basis | Level 2 | Other      
Fair value measurements on a recurring basis      
Money market funds 0 13,085,000  
Fair value measurements on a recurring basis | Level 2 | Bank      
Fair value measurements on a recurring basis      
Available-for-sale investment securities 1,287,459,000 1,089,755,000  
Fair value measurements on a recurring basis | Level 2 | Mortgage-related securities - FNMA, FHLMC and GNMA | Bank      
Fair value measurements on a recurring basis      
Available-for-sale investment securities 1,100,876,000 897,474,000  
Fair value measurements on a recurring basis | Level 2 | U.S. Treasury federal agency obligations | Bank      
Fair value measurements on a recurring basis      
Available-for-sale investment securities 186,583,000 192,281,000  
Fair value measurements on a recurring basis | Level 2 | Mortgage revenue bond | Bank      
Fair value measurements on a recurring basis      
Available-for-sale investment securities 0 0  
Fair value measurements on a recurring basis | Level 3      
Derivative assets      
Derivative assets 0 0  
Derivative liabilities      
Derivative liabilities-window forward contracts 0 0  
Fair value measurements on a recurring basis | Level 3 | Interest rate lock commitments      
Derivative assets      
Derivative assets 0 0  
Derivative liabilities      
Derivative liabilities-window forward contracts 0 0  
Fair value measurements on a recurring basis | Level 3 | Forward commitments      
Derivative assets      
Derivative assets 0 0  
Derivative liabilities      
Derivative liabilities-window forward contracts 0 0  
Fair value measurements on a recurring basis | Level 3 | Window forward contract      
Derivative assets      
Derivative assets 0 0  
Derivative liabilities      
Derivative liabilities-window forward contracts 0 0  
Fair value measurements on a recurring basis | Level 3 | Other      
Fair value measurements on a recurring basis      
Money market funds 0 0  
Fair value measurements on a recurring basis | Level 3 | Bank      
Fair value measurements on a recurring basis      
Available-for-sale investment securities 15,427,000 15,427,000  
Fair value measurements on a recurring basis | Level 3 | Mortgage-related securities - FNMA, FHLMC and GNMA | Bank      
Fair value measurements on a recurring basis      
Available-for-sale investment securities 0 0  
Fair value measurements on a recurring basis | Level 3 | U.S. Treasury federal agency obligations | Bank      
Fair value measurements on a recurring basis      
Available-for-sale investment securities 0 0  
Fair value measurements on a recurring basis | Level 3 | Mortgage revenue bond | Bank      
Fair value measurements on a recurring basis      
Available-for-sale investment securities 15,427,000 15,427,000  
Fair value measurements on a nonrecurring basis | Estimated fair value      
Derivative liabilities      
Loans 1,258,000 2,767,000  
Real estate acquired in settlement of loans   1,189,000  
Fair value measurements on a nonrecurring basis | American Savings Bank (ASB)      
Derivative liabilities      
Adjustments to fair value of loans held for sale 0   $ 0
Fair value measurements on a nonrecurring basis | Level 1      
Derivative liabilities      
Loans 0 0  
Real estate acquired in settlement of loans   0  
Fair value measurements on a nonrecurring basis | Level 2      
Derivative liabilities      
Loans 0 0  
Real estate acquired in settlement of loans   0  
Fair value measurements on a nonrecurring basis | Level 3      
Derivative liabilities      
Loans $ 1,258,000 2,767,000  
Real estate acquired in settlement of loans   $ 1,189,000