Employee Benefit Plans (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Summary of employee benefits charged to operating expenses
Payroll taxes	$ 1,081us-gaap_OtherLaborRelatedExpenses	$ 1,106us-gaap_OtherLaborRelatedExpenses	$ 1,127us-gaap_OtherLaborRelatedExpenses
Medical plans	1,974	1,915	1,772
401(k) match	310	309	298
Pension plan	960us-gaap_PensionExpense	1,173us-gaap_PensionExpense	1,224us-gaap_PensionExpense
Profit-sharing	201hwbk_ProfitSharingPlanCostRecognized	118hwbk_ProfitSharingPlanCostRecognized	58hwbk_ProfitSharingPlanCostRecognized
Other	122hwbk_OtherEmployeeBenefits	219hwbk_OtherEmployeeBenefits	317hwbk_OtherEmployeeBenefits
Total employee benefits	$ 4,648	$ 4,840	$ 4,796

The amount of pension and other (such as medical, dental and life insurance) postretirement benefit costs recognized during the period for (1) defined benefit plans (periodic benefit costs include the following components: service cost, interest cost, expected return on plan assets, gain (loss) on assets, prior service cost or credit, transition asset or obligation, and gain (loss) due to settlements or curtailments) and for (2) defined contribution plans (to the extent that a plan's defined contributions to an individual's account are to be made for periods in which that individual renders services, the net cost for a period is the contribution called for in that period; if a plan calls for contributions for periods after an individual retires or terminates, the estimated cost is accrued during the employee's service period).

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The amount of pension benefit costs recognized during the period for (1) defined benefit plans and (2) defined contribution plans. For defined benefit plans, pension expense includes the following components: service cost, interest cost, expected return on plan assets, gain (loss) on plan assets, prior service cost or credit, transition asset or obligation, and gain (loss) due to settlements or curtailments. For defined contribution plans, the pension expense generally equals the firm's contribution to employees' accounts (if the firm contributes) during the period.

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