Expense Example (­, (John Hancock Massachusetts Tax-Free Income Fund), Class A, USD $)	0 Months Ended
	Jan. 03, 2014
­ | (John Hancock Massachusetts Tax-Free Income Fund) | Class A
Expense Example:
Expense Example, with Redemption, 1 Year	$ 481
Expense Example, with Redemption, 3 Years	685
Expense Example, with Redemption, 5 Years	906
Expense Example, with Redemption, 10 Years	$ 1,540