Bank segment (HEI only) Allowance For Loan Losses (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013
Allowance for loan losses:
Valuation allowance, balance at the beginning of the period	$ 40,116	$ 41,985
Charge-offs	(5,550)	(8,202)
Recoveries	4,926	4,826
Provision	6,126	1,507
Valuation allowance, balance at the end of the period	45,618	40,116
Ending balance: individually evaluated for impairment	4,665	5,338
Ending balance: collectively evaluated for impairment	40,953	34,778
Financing Receivables:
Total financing receivables	4,440,989	4,158,953
Ending balance: individually evaluated for impairment	49,846	57,921
Ending balance: collectively evaluated for impairment	4,391,143	4,101,032
Residential 1-4 family
Allowance for loan losses:
Valuation allowance, balance at the beginning of the period	5,534	6,068
Charge-offs	(987)	(1,162)
Recoveries	1,180	1,881
Provision	(1,065)	(1,253)
Valuation allowance, balance at the end of the period	4,662	5,534
Ending balance: individually evaluated for impairment	951	642
Ending balance: collectively evaluated for impairment	3,711	4,892
Financing Receivables:
Total financing receivables	2,044,205	2,006,007
Ending balance: individually evaluated for impairment	22,981	20,317
Ending balance: collectively evaluated for impairment	2,021,224	1,985,690
Commercial real estate
Allowance for loan losses:
Valuation allowance, balance at the beginning of the period	5,059	2,965
Provision	3,895	2,094
Valuation allowance, balance at the end of the period	8,954	5,059
Ending balance: individually evaluated for impairment	1,845	1,118
Ending balance: collectively evaluated for impairment	7,109	3,941
Financing Receivables:
Total financing receivables	531,917	440,443
Ending balance: individually evaluated for impairment	5,112	4,604
Ending balance: collectively evaluated for impairment	526,805	435,839
Home equity line of credit
Allowance for loan losses:
Valuation allowance, balance at the beginning of the period	5,229	4,493
Charge-offs	(196)	(782)
Recoveries	752	358
Provision	1,197	1,160
Valuation allowance, balance at the end of the period	6,982	5,229
Ending balance: individually evaluated for impairment	46
Ending balance: collectively evaluated for impairment	6,936	5,229
Financing Receivables:
Total financing receivables	818,815	739,331
Ending balance: individually evaluated for impairment	779	1,179
Ending balance: collectively evaluated for impairment	818,036	738,152
Residential land
Allowance for loan losses:
Valuation allowance, balance at the beginning of the period	1,817	4,275
Charge-offs	(81)	(485)
Recoveries	469	868
Provision	(330)	(2,841)
Valuation allowance, balance at the end of the period	1,875	1,817
Ending balance: individually evaluated for impairment	1,057	1,332
Ending balance: collectively evaluated for impairment	818	485
Financing Receivables:
Total financing receivables	16,240	16,176
Ending balance: individually evaluated for impairment	7,850	10,577
Ending balance: collectively evaluated for impairment	8,390	5,599
Commercial construction
Allowance for loan losses:
Valuation allowance, balance at the beginning of the period	2,397	2,023
Provision	3,074	374
Valuation allowance, balance at the end of the period	5,471	2,397
Ending balance: collectively evaluated for impairment	5,471	2,397
Financing Receivables:
Total financing receivables	96,438	52,112
Ending balance: collectively evaluated for impairment	96,438	52,112
Residential construction
Allowance for loan losses:
Valuation allowance, balance at the beginning of the period	19	9
Provision	9	10
Valuation allowance, balance at the end of the period	28	19
Ending balance: collectively evaluated for impairment	28	19
Financing Receivables:
Total financing receivables	18,961	12,774
Ending balance: collectively evaluated for impairment	18,961	12,774
Commercial loans
Allowance for loan losses:
Valuation allowance, balance at the beginning of the period	15,803	15,931
Charge-offs	(1,872)	(3,056)
Recoveries	1,636	1,089
Provision	(1,550)	1,839
Valuation allowance, balance at the end of the period	14,017	15,803
Ending balance: individually evaluated for impairment	760	2,246
Ending balance: collectively evaluated for impairment	13,257	13,557
Financing Receivables:
Total financing receivables	791,757	783,388
Ending balance: individually evaluated for impairment	13,108	21,225
Ending balance: collectively evaluated for impairment	778,649	762,163
Consumer loans
Allowance for loan losses:
Valuation allowance, balance at the beginning of the period	2,367	4,019
Charge-offs	(2,414)	(2,717)
Recoveries	889	630
Provision	2,787	435
Valuation allowance, balance at the end of the period	3,629	2,367
Ending balance: individually evaluated for impairment	6
Ending balance: collectively evaluated for impairment	3,623	2,367
Financing Receivables:
Total financing receivables	122,656	108,722
Ending balance: individually evaluated for impairment	16	19
Ending balance: collectively evaluated for impairment	122,640	108,703
Unallocated
Allowance for loan losses:
Valuation allowance, balance at the beginning of the period	1,891	2,202
Provision	(1,891)	(311)
Valuation allowance, balance at the end of the period	0	1,891
Ending balance: collectively evaluated for impairment	$ 0	$ 1,891