Shareholder Fees	Nov. 04, 2025 USD ($)
Eventide Gilead Fund | Eventide Gilead Fund Class A
Prospectus [Line Items]
Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price)	5.75%
Maximum Deferred Sales Charge (as a percentage of Offering Price)	1.00%	[1]
Maximum Sales Charge on Reinvested Dividends and Distributions (as a percentage)	0.00%
Redemption Fee	$ (15)
Eventide Gilead Fund | Eventide Gilead Fund Class C
Prospectus [Line Items]
Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price)	0.00%
Maximum Deferred Sales Charge (as a percentage of Offering Price)	1.00%	[2]
Maximum Sales Charge on Reinvested Dividends and Distributions (as a percentage)	0.00%
Redemption Fee	$ (15)
Eventide Gilead Fund | Eventide Gilead Fund Class N
Prospectus [Line Items]
Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price)	0.00%
Maximum Deferred Sales Charge (as a percentage of Offering Price)	0.00%
Maximum Sales Charge on Reinvested Dividends and Distributions (as a percentage)	0.00%
Redemption Fee	$ (15)
Eventide Gilead Fund | Eventide Gilead Fund Class I
Prospectus [Line Items]
Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price)	0.00%
Maximum Deferred Sales Charge (as a percentage of Offering Price)	0.00%
Maximum Sales Charge on Reinvested Dividends and Distributions (as a percentage)	0.00%
Redemption Fee	$ (15)
Eventide Healthcare & Life Sciences Fund | Eventide Healthcare & Life Sciences Fund Class A Shares
Prospectus [Line Items]
Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price)	5.75%
Maximum Deferred Sales Charge (as a percentage of Offering Price)	1.00%	[3]
Maximum Sales Charge on Reinvested Dividends and Distributions (as a percentage)	0.00%
Redemption Fee	$ (15)
Eventide Healthcare & Life Sciences Fund | Eventide Healthcare & Life Sciences Fund Class C Shares
Prospectus [Line Items]
Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price)	0.00%
Maximum Deferred Sales Charge (as a percentage of Offering Price)	1.00%	[4]
Maximum Sales Charge on Reinvested Dividends and Distributions (as a percentage)	0.00%
Redemption Fee	$ (15)
Eventide Healthcare & Life Sciences Fund | Eventide Healthcare & Life Sciences Fund Class N Shares
Prospectus [Line Items]
Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price)	0.00%
Maximum Deferred Sales Charge (as a percentage of Offering Price)	0.00%
Maximum Sales Charge on Reinvested Dividends and Distributions (as a percentage)	0.00%
Redemption Fee	$ (15)
Eventide Healthcare & Life Sciences Fund | Eventide Healthcare & Life Sciences Fund Class I Shares
Prospectus [Line Items]
Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price)	0.00%
Maximum Deferred Sales Charge (as a percentage of Offering Price)	0.00%
Maximum Sales Charge on Reinvested Dividends and Distributions (as a percentage)	0.00%
Redemption Fee	$ (15)
Eventide Balanced Fund | Eventide Balanced Fund Class A
Prospectus [Line Items]
Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price)	5.75%
Maximum Deferred Sales Charge (as a percentage of Offering Price)	1.00%	[5]
Maximum Sales Charge on Reinvested Dividends and Distributions (as a percentage)	0.00%
Redemption Fee	$ (15)
Eventide Balanced Fund | Eventide Balanced Fund Class C
Prospectus [Line Items]
Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price)	0.00%
Maximum Deferred Sales Charge (as a percentage of Offering Price)	1.00%	[6]
Maximum Sales Charge on Reinvested Dividends and Distributions (as a percentage)	0.00%
Redemption Fee	$ (15)
Eventide Balanced Fund | Eventide Balanced Fund Class N
Prospectus [Line Items]
Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price)	0.00%
Maximum Deferred Sales Charge (as a percentage of Offering Price)	0.00%
Maximum Sales Charge on Reinvested Dividends and Distributions (as a percentage)	0.00%
Redemption Fee	$ (15)
Eventide Balanced Fund | Eventide Balanced Fund Class I
Prospectus [Line Items]
Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price)	0.00%
Maximum Deferred Sales Charge (as a percentage of Offering Price)	0.00%
Maximum Sales Charge on Reinvested Dividends and Distributions (as a percentage)	0.00%
Redemption Fee	$ (15)
Eventide Dividend Growth Fund | Eventide Dividend Growth Fund Class A Shares
Prospectus [Line Items]
Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price)	5.75%
Maximum Deferred Sales Charge (as a percentage of Offering Price)	1.00%	[7]
Maximum Sales Charge on Reinvested Dividends and Distributions (as a percentage)	0.00%
Redemption Fee	$ (15)
Eventide Dividend Growth Fund | Eventide Dividend Growth Fund Class C Shares
Prospectus [Line Items]
Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price)	0.00%
Maximum Deferred Sales Charge (as a percentage of Offering Price)	1.00%	[8]
Maximum Sales Charge on Reinvested Dividends and Distributions (as a percentage)	0.00%
Redemption Fee	$ (15)
Eventide Dividend Growth Fund | Eventide Dividend Growth Fund Class N Shares
Prospectus [Line Items]
Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price)	0.00%
Maximum Deferred Sales Charge (as a percentage of Offering Price)	0.00%
Maximum Sales Charge on Reinvested Dividends and Distributions (as a percentage)	0.00%
Redemption Fee	$ (15)
Eventide Dividend Growth Fund | Eventide Dividend Growth Fund Class I Shares
Prospectus [Line Items]
Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price)	0.00%
Maximum Deferred Sales Charge (as a percentage of Offering Price)	0.00%
Maximum Sales Charge on Reinvested Dividends and Distributions (as a percentage)	0.00%
Redemption Fee	$ (15)
Eventide Limited-Term Bond Fund | Eventide Limited-Term Bond Fund Class A
Prospectus [Line Items]
Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price)	5.75%
Maximum Deferred Sales Charge (as a percentage of Offering Price)	1.00%	[9]
Maximum Sales Charge on Reinvested Dividends and Distributions (as a percentage)	0.00%
Redemption Fee	$ (15)
Eventide Limited-Term Bond Fund | Eventide Limited-Term Bond Fund Class C
Prospectus [Line Items]
Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price)	0.00%
Maximum Deferred Sales Charge (as a percentage of Offering Price)	1.00%	[10]
Maximum Sales Charge on Reinvested Dividends and Distributions (as a percentage)	0.00%
Redemption Fee	$ (15)
Eventide Limited-Term Bond Fund | Eventide Limited-Term Bond Fund Class N
Prospectus [Line Items]
Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price)	0.00%
Maximum Deferred Sales Charge (as a percentage of Offering Price)	0.00%
Maximum Sales Charge on Reinvested Dividends and Distributions (as a percentage)	0.00%
Redemption Fee	$ (15)
Eventide Limited-Term Bond Fund | Eventide Limited-Term Bond Fund Class I
Prospectus [Line Items]
Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price)	0.00%
Maximum Deferred Sales Charge (as a percentage of Offering Price)	0.00%
Maximum Sales Charge on Reinvested Dividends and Distributions (as a percentage)	0.00%
Redemption Fee	$ (15)
Eventide Exponential Technologies Fund | Eventide Exponential Technologies Fund Class A Share
Prospectus [Line Items]
Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price)	5.75%
Maximum Deferred Sales Charge (as a percentage of Offering Price)	1.00%	[11]
Maximum Sales Charge on Reinvested Dividends and Distributions (as a percentage)	0.00%
Redemption Fee (as a percentage of Amount Redeemed)	0.00%
Redemption Fee	$ (15)
Eventide Exponential Technologies Fund | Eventide Exponential Technologies Fund Class C Share
Prospectus [Line Items]
Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price)	0.00%
Maximum Deferred Sales Charge (as a percentage of Offering Price)	1.00%	[12]
Maximum Sales Charge on Reinvested Dividends and Distributions (as a percentage)	0.00%
Redemption Fee (as a percentage of Amount Redeemed)	0.00%
Redemption Fee	$ (15)
Eventide Exponential Technologies Fund | Eventide Exponential Technologies Fund Class N Share
Prospectus [Line Items]
Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price)	0.00%
Maximum Deferred Sales Charge (as a percentage of Offering Price)	0.00%
Maximum Sales Charge on Reinvested Dividends and Distributions (as a percentage)	0.00%
Redemption Fee (as a percentage of Amount Redeemed)	0.00%
Redemption Fee	$ (15)
Eventide Exponential Technologies Fund | Eventide Exponential Technologies Fund Class I Share
Prospectus [Line Items]
Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price)	0.00%
Maximum Deferred Sales Charge (as a percentage of Offering Price)	0.00%
Maximum Sales Charge on Reinvested Dividends and Distributions (as a percentage)	0.00%
Redemption Fee (as a percentage of Amount Redeemed)	0.00%
Redemption Fee	$ (15)
Eventide Core Bond Fund | Eventide Core Bond Fund Class A Shares
Prospectus [Line Items]
Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price)	5.75%
Maximum Deferred Sales Charge (as a percentage of Offering Price)	1.00%	[13]
Maximum Sales Charge on Reinvested Dividends and Distributions (as a percentage)	0.00%
Redemption Fee	$ (15)
Eventide Core Bond Fund | Eventide Core Bond Fund Class C Shares
Prospectus [Line Items]
Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price)	0.00%
Maximum Deferred Sales Charge (as a percentage of Offering Price)	1.00%	[14]
Maximum Sales Charge on Reinvested Dividends and Distributions (as a percentage)	0.00%
Redemption Fee	$ (15)
Eventide Core Bond Fund | Eventide Core Bond Fund Class N Shares
Prospectus [Line Items]
Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price)	0.00%
Maximum Deferred Sales Charge (as a percentage of Offering Price)	0.00%
Maximum Sales Charge on Reinvested Dividends and Distributions (as a percentage)	0.00%
Redemption Fee	$ (15)
Eventide Core Bond Fund | Eventide Core Bond Fund Class I Shares
Prospectus [Line Items]
Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price)	0.00%
Maximum Deferred Sales Charge (as a percentage of Offering Price)	0.00%
Maximum Sales Charge on Reinvested Dividends and Distributions (as a percentage)	0.00%
Redemption Fee	$ (15)
Eventide Large Cap Focus Fund | Eventide Large Cap Focus Fund Class A
Prospectus [Line Items]
Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price)	5.75%
Maximum Deferred Sales Charge (as a percentage of Offering Price)	1.00%	[15]
Maximum Sales Charge on Reinvested Dividends and Distributions (as a percentage)	0.00%
Redemption Fee	$ (15)
Eventide Large Cap Focus Fund | Eventide Large Cap Focus Fund Class C
Prospectus [Line Items]
Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price)	0.00%
Maximum Deferred Sales Charge (as a percentage of Offering Price)	1.00%	[16]
Maximum Sales Charge on Reinvested Dividends and Distributions (as a percentage)	0.00%
Redemption Fee	$ (15)
Eventide Large Cap Focus Fund | Eventide Large Cap Focus Fund Class N
Prospectus [Line Items]
Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price)	0.00%
Maximum Deferred Sales Charge (as a percentage of Offering Price)	0.00%
Maximum Sales Charge on Reinvested Dividends and Distributions (as a percentage)	0.00%
Redemption Fee	$ (15)
Eventide Large Cap Focus Fund | Eventide Large Cap Focus Fund Class I
Prospectus [Line Items]
Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price)	0.00%
Maximum Deferred Sales Charge (as a percentage of Offering Price)	0.00%
Maximum Sales Charge on Reinvested Dividends and Distributions (as a percentage)	0.00%
Redemption Fee	$ (15)

[1] The maximum deferred sales charge on Class A shares (as a % of NAV at the time of purchase) applies only to purchases of $250,000 or more and applies to shares sold within 18 months of purchase.

[2] The maximum deferred sales charge on Class C shares (as a % of the lesser of NAV of the shares redeemed or the original purchase price) applies to shares sold within 12 months of purchase.

[3] The maximum deferred sales charge on Class A shares (as a % of NAV at the time of purchase) applies only to purchases of $250,000 or more and applies to shares sold within 18 months of purchase.

[4] The maximum deferred sales charge on Class C shares (as a % of the lesser of NAV of the shares redeemed or the original purchase price) applies to shares sold within 12 months of purchase.

[5] The maximum deferred sales charge on Class A shares (as a % of NAV at the time of purchase) applies only to purchases of $250,000 or more and applies to shares sold within 18 months of purchase.

[6] The maximum deferred sales charge on Class C shares (as a % of the lesser of NAV of the shares redeemed or the original purchase price) applies to shares sold within 12 months of purchase.

[7] The maximum deferred sales charge on Class A shares (as a % of NAV at the time of purchase) applies only to purchases of $250,000 or more and applies to shares sold within 18 months of purchase.

[8] The maximum deferred sales charge on Class C shares (as a % of the lesser of NAV of the shares redeemed or the original purchase price) applies to shares sold within 12 months of purchase.

[9] The maximum deferred sales charge on Class A shares (as a % of NAV at the time of purchase) applies only to purchases of $250,000 or more and applies to shares sold within 18 months of purchase.

[10] The maximum deferred sales charge on Class C shares (as a % of the lesser of NAV of the shares redeemed or the original purchase price) applies to shares sold within 12 months of purchase.

[11] The maximum deferred sales charge on Class A shares (as a % of NAV at the time of purchase) applies only to purchases of $250,000 or more and applies to shares sold within 18 months of purchase.

[12] The maximum deferred sales charge on Class C shares (as a % of the lesser of NAV of the shares redeemed or the original purchase price) applies to shares sold within 12 months of purchase.

[13] The maximum deferred sales charge on Class A shares (as a % of NAV at the time of purchase) applies only to purchases of $250,000 or more and applies to shares sold within 18 months of purchase.

[14] The maximum deferred sales charge on Class C shares (as a % of the lesser of NAV of the shares redeemed or the original purchase price) applies to shares sold within 12 months of purchase.

[15] The maximum deferred sales charge on Class A shares (as a % of NAV at the time of purchase) applies only to purchases of $250,000 or more and applies to shares sold within 18 months of purchase.

[16] The maximum deferred sales charge on Class C shares (as a % of the lesser of NAV of the shares redeemed or the original purchase price) applies to shares sold within 12 months of purchase.