Bank segment (HEI only) Credit Risk Profile Based on Payment Activity for Loans (Details) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Credit risk profile based on payment activity for loans
30-59 days past due	$ 7,371	$ 8,993
60-89 days past due	4,811	2,711
Greater than 90 days	13,917	13,798
Total past due	26,099	25,502
Current	4,595,969	4,415,487
Total financing receivables	4,622,068	4,440,989
Recorded Investment greater than 90 days and accruing	0	0
Residential 1-4 family
Credit risk profile based on payment activity for loans
30-59 days past due	4,967	6,124
60-89 days past due	3,289	1,732
Greater than 90 days	11,503	12,632
Total past due	19,759	20,488
Current	2,049,906	2,023,717
Total financing receivables	2,069,665	2,044,205
Recorded Investment greater than 90 days and accruing	0	0
Commercial real estate
Credit risk profile based on payment activity for loans
30-59 days past due	0	0
60-89 days past due		0
Greater than 90 days	0	0
Total past due	0	0
Current	690,561	531,917
Total financing receivables	690,561	531,917
Recorded Investment greater than 90 days and accruing	0	0
Home equity line of credit
Credit risk profile based on payment activity for loans
30-59 days past due	896	1,341
60-89 days past due	706	501
Greater than 90 days	477	194
Total past due	2,079	2,036
Current	844,215	816,779
Total financing receivables	846,294	818,815
Recorded Investment greater than 90 days and accruing	0	0
Residential land
Credit risk profile based on payment activity for loans
30-59 days past due	0	0
60-89 days past due	0	0
Greater than 90 days	415	0
Total past due	415	0
Current	17,814	16,240
Total financing receivables	18,229	16,240
Recorded Investment greater than 90 days and accruing	0	0
Commercial construction
Credit risk profile based on payment activity for loans
Current	100,796	96,438
Total financing receivables	100,796	96,438
Recorded Investment greater than 90 days and accruing	0	0
Residential construction
Credit risk profile based on payment activity for loans
Current	14,089	18,961
Total financing receivables	14,089	18,961
Recorded Investment greater than 90 days and accruing	0	0
Commercial loans
Credit risk profile based on payment activity for loans
30-59 days past due	125	699
60-89 days past due	223	145
Greater than 90 days	878	569
Total past due	1,226	1,413
Current	757,433	790,344
Total financing receivables	758,659	791,757
Recorded Investment greater than 90 days and accruing	0	0
Consumer loans
Credit risk profile based on payment activity for loans
30-59 days past due	1,383	829
60-89 days past due	593	333
Greater than 90 days	644	403
Total past due	2,620	1,565
Current	121,155	121,091
Total financing receivables	123,775	122,656
Recorded Investment greater than 90 days and accruing	$ 0	$ 0