Basis of Presentation - (Details)	12 Months Ended
Dec. 31, 2016 item
Accounting Policies [Abstract]
Number of full service banking offices	91

Represents the number of full service banking offices.

No definition available.

Name:	nbhc_NumberOfFullServiceBankingOffices
Namespace Prefix:	nbhc_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration