Restricted Net Assets and Parent Company Condensed Financial Information - Income and Comprehensive Income (Loss) (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Condensed Statements of Income and Comprehensive Income (Loss)
Equity in earnings of Hawaiian Telcom Communications, Inc.									$ 1,697	$ 2,457	$ 14,009
Income tax expense									591	1,357	5,910
Net income	$ (214)	$ (279)	$ 1,445	$ 154	$ (435)	$ 105	$ 455	$ 975	1,106	1,100	8,099
Other comprehensive loss, net of tax									(5,830)	(5,441)	(19,231)
Comprehensive loss									(4,724)	(4,341)	(11,132)
Dividends paid by the subsidiaries to the parent company									0	0	0
Parent Company
Condensed Statements of Income and Comprehensive Income (Loss)
Equity in earnings of Hawaiian Telcom Communications, Inc.									1,106	1,100	8,099
Net income									1,106	1,100	8,099
Other comprehensive loss, net of tax									(5,830)	(5,441)	(19,231)
Comprehensive loss									$ (4,724)	$ (4,341)	$ (11,132)