Bank subsidiary (HEI only) (Details 5) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Amortized Cost
Due in one year or less	$ 0
Due after one year through five years	42,920,000
Due after five years through ten years	95,860,000
Due after ten years	21,317,000
Total amortized cost	160,097,000
Mortgage-related securities-FNMA, FHLMC and GNMA - amortized cost	374,993,000
Total available-for-sale securities, amortized cost	535,090,000	653,492,000
Fair value
Due in one year or less	0
Due after one year through five years	43,137,000
Due after five years through ten years	96,751,000
Due after ten years	19,675,000
Total fair value	159,563,000
Mortgage-related securities-FNMA, FHLMC and GNMA - fair value	369,444,000
Estimated fair value	529,007,000	671,358,000
Proceeds from sales of available-for-sale	71,367,000	3,548,000	32,799,000
Available-for-sale securities pledged at carrying value	87,100,000	98,000,000
Available-for-sale securities, pledged at carrying value as collateral for securities sold under agreements to repurchase	187,100,000	189,300,000
Mortgage-related securities - FNMA, FHLMC and GNMA
Amortized Cost
Total available-for-sale securities, amortized cost	374,993,000	407,175,000
Fair value
Estimated fair value	369,444,000	417,383,000
Proceeds from sales of available-for-sale		3,500,000	30,700,000
Gross realized gains		100,000	400,000
Federal agency obligations
Amortized Cost
Total available-for-sale securities, amortized cost	83,193,000	168,324,000
Fair value
Estimated fair value	80,973,000	171,491,000
Proceeds from sales of available-for-sale	71,400,000
Gross realized gains	1,200,000
Municipal bonds
Amortized Cost
Total available-for-sale securities, amortized cost	76,904,000	77,993,000
Fair value
Estimated fair value	78,590,000	82,484,000
Proceeds from sales of available-for-sale		2,100,000
Gross realized gains		$ 5,000