XML 30 R55.htm IDEA: XBRL DOCUMENT
v3.19.3.a.u2

Acquisitions - Purchase Price Allocation (Details) - USD ($) $ in Thousands |  |  |  |  |  |  |  | 12 Months Ended |  |  |  |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
May 23, 2018 | Feb. 14, 2018 | Oct. 02, 2017 | Aug. 04, 2017 | Jul. 03, 2017 | May 01, 2017 | Jan. 31, 2017 | Dec. 31, 2017 | Dec. 31, 2019 | Aug. 01, 2019 | Jun. 14, 2019 | Dec. 31, 2018 | Dec. 14, 2018 | Nov. 13, 2018
Assets Acquired |  |  |  |  |  |  |  |  |  |  |  |  |  |
Goodwill |  |  |  |  |  |  |  | $ 238,147 | $ 353,193 |  |  | $ 335,433 |  |
Liabilities Assumed |  |  |  |  |  |  |  |  |  |  |  |  |  |
Gain on bargain purchase |  |  |  |  |  |  |  | $ (11,039) |  |  |  |  |  |
Fibrovein Holdings Limited |  |  |  |  |  |  |  |  |  |  |  |  |  |
Assets Acquired |  |  |  |  |  |  |  |  |  |  |  |  |  |
Trade receivables |  |  |  |  |  |  |  |  |  | $ 277 |  |  |  |
Inventories |  |  |  |  |  |  |  |  |  | 843 |  |  |  |
Prepaid expenses and other assets |  |  |  |  |  |  |  |  |  | 49 |  |  |  |
Goodwill |  |  |  |  |  |  |  |  |  | 4,975 |  |  |  |
Total assets acquired |  |  |  |  |  |  |  |  |  | 16,572 |  |  |  |
Liabilities Assumed |  |  |  |  |  |  |  |  |  |  |  |  |  |
Trade payables |  |  |  |  |  |  |  |  |  | (53) |  |  |  |
Accrued expenses |  |  |  |  |  |  |  |  |  | (29) |  |  |  |
Deferred income tax liabilities |  |  |  |  |  |  |  |  |  | (1,890) |  |  |  |
Total liabilities assumed |  |  |  |  |  |  |  |  |  | (1,972) |  |  |  |
Total net assets acquired |  |  |  |  |  |  |  |  |  | 14,600 |  |  |  |
Fibrovein Holdings Limited | Developed technology |  |  |  |  |  |  |  |  |  |  |  |  |  |
Assets Acquired |  |  |  |  |  |  |  |  |  |  |  |  |  |
Intangibles |  |  |  |  |  |  |  |  |  | $ 10,428 |  |  |  |
Brightwater |  |  |  |  |  |  |  |  |  |  |  |  |  |
Assets Acquired |  |  |  |  |  |  |  |  |  |  |  |  |  |
Trade receivables |  |  |  |  |  |  |  |  |  |  | $ 55 |  |  |
Inventories |  |  |  |  |  |  |  |  |  |  | 349 |  |  |
Property and equipment |  |  |  |  |  |  |  |  |  |  | 409 |  |  |
Other long-term assets |  |  |  |  |  |  |  |  |  |  | 30 |  |  |
Goodwill |  |  |  |  |  |  |  |  |  |  | 17,492 |  |  |
Total assets acquired |  |  |  |  |  |  |  |  |  |  | 50,628 |  |  |
Liabilities Assumed |  |  |  |  |  |  |  |  |  |  |  |  |  |
Trade payables |  |  |  |  |  |  |  |  |  |  | (58) |  |  |
Accrued expenses |  |  |  |  |  |  |  |  |  |  | (261) |  |  |
Other long-term liabilities |  |  |  |  |  |  |  |  |  |  | (1,522) |  |  |
Deferred income tax liabilities |  |  |  |  |  |  |  |  |  |  | (4,148) |  |  |
Total liabilities assumed |  |  |  |  |  |  |  |  |  |  | (5,989) |  |  |
Total net assets acquired |  |  |  |  |  |  |  |  |  |  | 44,639 |  |  |
Brightwater | Developed technology |  |  |  |  |  |  |  |  |  |  |  |  |  |
Assets Acquired |  |  |  |  |  |  |  |  |  |  |  |  |  |
Intangibles |  |  |  |  |  |  |  |  |  |  | 31,960 |  |  |
Brightwater | Customer Lists |  |  |  |  |  |  |  |  |  |  |  |  |  |
Assets Acquired |  |  |  |  |  |  |  |  |  |  |  |  |  |
Intangibles |  |  |  |  |  |  |  |  |  |  | 83 |  |  |
Brightwater | Trademarks |  |  |  |  |  |  |  |  |  |  |  |  |  |
Assets Acquired |  |  |  |  |  |  |  |  |  |  |  |  |  |
Intangibles |  |  |  |  |  |  |  |  |  |  | $ 250 |  |  |
Vascular Insights |  |  |  |  |  |  |  |  |  |  |  |  |  |
Assets Acquired |  |  |  |  |  |  |  |  |  |  |  |  |  |
Inventories |  |  |  |  |  |  |  |  |  |  |  |  | $ 1,353 |
Goodwill |  |  |  |  |  |  |  |  |  |  |  |  | 21,832 |
Total assets acquired |  |  |  |  |  |  |  |  |  |  |  |  | 58,185 |
Vascular Insights | Developed technology |  |  |  |  |  |  |  |  |  |  |  |  |  |
Assets Acquired |  |  |  |  |  |  |  |  |  |  |  |  |  |
Intangibles |  |  |  |  |  |  |  |  |  |  |  |  | 32,750 |
Vascular Insights | Customer Lists |  |  |  |  |  |  |  |  |  |  |  |  |  |
Assets Acquired |  |  |  |  |  |  |  |  |  |  |  |  |  |
Intangibles |  |  |  |  |  |  |  |  |  |  |  |  | 840 |
Vascular Insights | Trademarks |  |  |  |  |  |  |  |  |  |  |  |  |  |
Assets Acquired |  |  |  |  |  |  |  |  |  |  |  |  |  |
Intangibles |  |  |  |  |  |  |  |  |  |  |  |  | $ 1,410 |
Cianna Medical |  |  |  |  |  |  |  |  |  |  |  |  |  |
Assets Acquired |  |  |  |  |  |  |  |  |  |  |  |  |  |
Trade receivables |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 6,151
Inventories |  |  |  |  |  |  |  |  |  |  |  |  |  | 5,803
Prepaid expenses and other assets |  |  |  |  |  |  |  |  |  |  |  |  |  | 315
Property and equipment |  |  |  |  |  |  |  |  |  |  |  |  |  | 1,047
Other long-term assets |  |  |  |  |  |  |  |  |  |  |  |  |  | 14
Goodwill |  |  |  |  |  |  |  |  |  |  |  |  |  | 61,379
Total assets acquired |  |  |  |  |  |  |  |  |  |  |  |  |  | 219,629
Liabilities Assumed |  |  |  |  |  |  |  |  |  |  |  |  |  |
Trade payables |  |  |  |  |  |  |  |  |  |  |  |  |  | (1,497)
Accrued expenses |  |  |  |  |  |  |  |  |  |  |  |  |  | (2,384)
Other long-term liabilities |  |  |  |  |  |  |  |  |  |  |  |  |  | (1,527)
Deferred income tax liabilities |  |  |  |  |  |  |  |  |  |  |  |  |  | (25,940)
Total liabilities assumed |  |  |  |  |  |  |  |  |  |  |  |  |  | (31,348)
Total net assets acquired |  |  |  |  |  |  |  |  |  |  |  |  |  | 188,281
Cianna Medical | Developed technology |  |  |  |  |  |  |  |  |  |  |  |  |  |
Assets Acquired |  |  |  |  |  |  |  |  |  |  |  |  |  |
Intangibles |  |  |  |  |  |  |  |  |  |  |  |  |  | 134,510
Cianna Medical | Customer Lists |  |  |  |  |  |  |  |  |  |  |  |  |  |
Assets Acquired |  |  |  |  |  |  |  |  |  |  |  |  |  |
Intangibles |  |  |  |  |  |  |  |  |  |  |  |  |  | 3,330
Cianna Medical | Trademarks |  |  |  |  |  |  |  |  |  |  |  |  |  |
Assets Acquired |  |  |  |  |  |  |  |  |  |  |  |  |  |
Intangibles |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 7,080
DirectACCESS Medical, LLC |  |  |  |  |  |  |  |  |  |  |  |  |  |
Assets Acquired |  |  |  |  |  |  |  |  |  |  |  |  |  |
Inventories | $ 971 |  |  |  |  |  |  |  |  |  |  |  |  |
Goodwill | 938 |  |  |  |  |  |  |  |  |  |  |  |  |
Total assets acquired | 7,269 |  |  |  |  |  |  |  |  |  |  |  |  |
Liabilities Assumed |  |  |  |  |  |  |  |  |  |  |  |  |  |
Total purchase price | 7,300 |  |  |  |  |  |  |  |  |  |  |  |  |
DirectACCESS Medical, LLC | Developed technology |  |  |  |  |  |  |  |  |  |  |  |  |  |
Assets Acquired |  |  |  |  |  |  |  |  |  |  |  |  |  |
Intangibles | 4,840 |  |  |  |  |  |  |  |  |  |  |  |  |
DirectACCESS Medical, LLC | Customer Lists |  |  |  |  |  |  |  |  |  |  |  |  |  |
Assets Acquired |  |  |  |  |  |  |  |  |  |  |  |  |  |
Intangibles | 120 |  |  |  |  |  |  |  |  |  |  |  |  |
DirectACCESS Medical, LLC | Trademarks |  |  |  |  |  |  |  |  |  |  |  |  |  |
Assets Acquired |  |  |  |  |  |  |  |  |  |  |  |  |  |
Intangibles | $ 400 |  |  |  |  |  |  |  |  |  |  |  |  |
Becton, Dickinson and Company |  |  |  |  |  |  |  |  |  |  |  |  |  |
Assets Acquired |  |  |  |  |  |  |  |  |  |  |  |  |  |
Inventories |  | $ 5,804 |  |  |  |  |  |  |  |  |  |  |  |
Property and equipment |  | 748 |  |  |  |  |  |  |  |  |  |  |  |
Goodwill |  | 9,728 |  |  |  |  |  |  |  |  |  |  |  |
Total assets acquired |  | 101,880 |  |  |  |  |  |  |  |  |  |  |  |
Liabilities Assumed |  |  |  |  |  |  |  |  |  |  |  |  |  |
Total purchase price |  | 100,300 |  |  |  |  |  |  |  |  |  |  |  |
Becton, Dickinson and Company | Developed technology |  |  |  |  |  |  |  |  |  |  |  |  |  |
Assets Acquired |  |  |  |  |  |  |  |  |  |  |  |  |  |
Intangibles |  | 74,000 |  |  |  |  |  |  |  |  |  |  |  |
Becton, Dickinson and Company | Customer Lists |  |  |  |  |  |  |  |  |  |  |  |  |  |
Assets Acquired |  |  |  |  |  |  |  |  |  |  |  |  |  |
Intangibles |  | 4,200 |  |  |  |  |  |  |  |  |  |  |  |
Becton, Dickinson and Company | Trademarks |  |  |  |  |  |  |  |  |  |  |  |  |  |
Assets Acquired |  |  |  |  |  |  |  |  |  |  |  |  |  |
Intangibles |  | 4,900 |  |  |  |  |  |  |  |  |  |  |  |
Becton, Dickinson and Company | In-process technology |  |  |  |  |  |  |  |  |  |  |  |  |  |
Assets Acquired |  |  |  |  |  |  |  |  |  |  |  |  |  |
Intangibles |  | $ 2,500 |  |  |  |  |  |  |  |  |  |  |  |
ITL Healthcare Pty Ltd |  |  |  |  |  |  |  |  |  |  |  |  |  |
Assets Acquired |  |  |  |  |  |  |  |  |  |  |  |  |  |
Trade receivables |  |  | $ 1,287 |  |  |  |  |  |  |  |  |  |  |
Other receivables |  |  | 56 |  |  |  |  |  |  |  |  |  |  |
Inventories |  |  | 1,808 |  |  |  |  |  |  |  |  |  |  |
Prepaid expenses and other assets |  |  | 65 |  |  |  |  |  |  |  |  |  |  |
Property and equipment |  |  | 1,053 |  |  |  |  |  |  |  |  |  |  |
Goodwill |  |  | 3,945 |  |  |  |  |  |  |  |  |  |  |
Total assets acquired |  |  | 14,154 |  |  |  |  |  |  |  |  |  |  |
Liabilities Assumed |  |  |  |  |  |  |  |  |  |  |  |  |  |
Trade payables |  |  | (216) |  |  |  |  |  |  |  |  |  |  |
Accrued expenses |  |  | (747) |  |  |  |  |  |  |  |  |  |  |
Deferred income tax liabilities |  |  | (1,901) |  |  |  |  |  |  |  |  |  |  |
Total liabilities assumed |  |  | (2,864) |  |  |  |  |  |  |  |  |  |  |
Total net assets acquired |  |  | 11,290 |  |  |  |  |  |  |  |  |  |  |
Total purchase price |  |  | 11,300 |  |  |  |  |  |  |  |  |  |  |
ITL Healthcare Pty Ltd | Customer Lists |  |  |  |  |  |  |  |  |  |  |  |  |  |
Assets Acquired |  |  |  |  |  |  |  |  |  |  |  |  |  |
Intangibles |  |  | $ 5,940 |  |  |  |  |  |  |  |  |  |  |
Laurane Medical S.A.S. |  |  |  |  |  |  |  |  |  |  |  |  |  |
Assets Acquired |  |  |  |  |  |  |  |  |  |  |  |  |  |
Inventories |  |  |  | $ 594 |  |  |  |  |  |  |  |  |  |
Goodwill |  |  |  | 6,366 |  |  |  |  |  |  |  |  |  |
Total assets acquired |  |  |  | 22,000 |  |  |  |  |  |  |  |  |  |
Liabilities Assumed |  |  |  |  |  |  |  |  |  |  |  |  |  |
Total purchase price |  |  |  | 16,500 |  |  |  |  |  |  |  |  |  |
Laurane Medical S.A.S. | Developed technology |  |  |  |  |  |  |  |  |  |  |  |  |  |
Assets Acquired |  |  |  |  |  |  |  |  |  |  |  |  |  |
Intangibles |  |  |  | 14,920 |  |  |  |  |  |  |  |  |  |
Laurane Medical S.A.S. | Customer Lists |  |  |  |  |  |  |  |  |  |  |  |  |  |
Assets Acquired |  |  |  |  |  |  |  |  |  |  |  |  |  |
Intangibles |  |  |  | $ 120 |  |  |  |  |  |  |  |  |  |
Osseon LLC |  |  |  |  |  |  |  |  |  |  |  |  |  |
Assets Acquired |  |  |  |  |  |  |  |  |  |  |  |  |  |
Inventories |  |  |  |  | $ 979 |  |  |  |  |  |  |  |  |
Property and equipment |  |  |  |  | 58 |  |  |  |  |  |  |  |  |
Goodwill |  |  |  |  | 203 |  |  |  |  |  |  |  |  |
Total assets acquired |  |  |  |  | 6,840 |  |  |  |  |  |  |  |  |
Liabilities Assumed |  |  |  |  |  |  |  |  |  |  |  |  |  |
Total purchase price |  |  |  |  | 6,800 |  |  |  |  |  |  |  |  |
Osseon LLC | Developed technology |  |  |  |  |  |  |  |  |  |  |  |  |  |
Assets Acquired |  |  |  |  |  |  |  |  |  |  |  |  |  |
Intangibles |  |  |  |  | 5,400 |  |  |  |  |  |  |  |  |
Osseon LLC | Customer Lists |  |  |  |  |  |  |  |  |  |  |  |  |  |
Assets Acquired |  |  |  |  |  |  |  |  |  |  |  |  |  |
Intangibles |  |  |  |  | $ 200 |  |  |  |  |  |  |  |  |
Vascular Access Technologies, Inc. |  |  |  |  |  |  |  |  |  |  |  |  |  |
Assets Acquired |  |  |  |  |  |  |  |  |  |  |  |  |  |
Goodwill |  |  |  |  |  | $ 4,281 |  |  |  |  |  |  |  |
Liabilities Assumed |  |  |  |  |  |  |  |  |  |  |  |  |  |
Deferred income tax liabilities |  |  |  |  |  | (3,101) |  |  |  |  |  |  |  |
Total net assets acquired |  |  |  |  |  | 9,900 |  |  |  |  |  |  |  |
Total purchase price |  |  |  |  |  | 5,000 |  |  |  |  |  |  |  |
Vascular Access Technologies, Inc. | Developed technology |  |  |  |  |  |  |  |  |  |  |  |  |  |
Assets Acquired |  |  |  |  |  |  |  |  |  |  |  |  |  |
Intangibles |  |  |  |  |  | 7,800 |  |  |  |  |  |  |  |
Vascular Access Technologies, Inc. | In-process technology |  |  |  |  |  |  |  |  |  |  |  |  |  |
Assets Acquired |  |  |  |  |  |  |  |  |  |  |  |  |  |
Intangibles |  |  |  |  |  | $ 920 |  |  |  |  |  |  |  |
Argon Medical Devices, Inc. |  |  |  |  |  |  |  |  |  |  |  |  |  |
Assets Acquired |  |  |  |  |  |  |  |  |  |  |  |  |  |
Cash and cash equivalents |  |  |  |  |  |  | $ 1,436 |  |  |  |  |  |  |
Trade receivables |  |  |  |  |  |  | 8,351 |  |  |  |  |  |  |
Inventories |  |  |  |  |  |  | 11,222 |  |  |  |  |  |  |
Prepaid expenses and other assets |  |  |  |  |  |  | 1,275 |  |  |  |  |  |  |
Income tax refund receivable |  |  |  |  |  |  | 165 |  |  |  |  |  |  |
Property and equipment |  |  |  |  |  |  | 2,319 |  |  |  |  |  |  |
Deferred tax assets |  |  |  |  |  |  | 202 |  |  |  |  |  |  |
Total assets acquired |  |  |  |  |  |  | 29,570 |  |  |  |  |  |  |
Liabilities Assumed |  |  |  |  |  |  |  |  |  |  |  |  |  |
Trade payables |  |  |  |  |  |  | (2,414) |  |  |  |  |  |  |
Accrued expenses |  |  |  |  |  |  | (5,083) |  |  |  |  |  |  |
Deferred income tax liabilities |  |  |  |  |  |  | (934) |  |  |  |  |  |  |
Total liabilities assumed |  |  |  |  |  |  | (8,431) |  |  |  |  |  |  |
Total net assets acquired |  |  |  |  |  |  | 21,139 |  |  |  |  |  |  |
Gain on bargain purchase |  |  |  |  |  |  | (11,039) |  |  |  |  |  |  |
Total purchase price |  |  |  |  |  |  | 10,100 |  |  |  |  |  |  |
Argon Medical Devices, Inc. | Preliminary Allocation |  |  |  |  |  |  |  |  |  |  |  |  |  |
Liabilities Assumed |  |  |  |  |  |  |  |  |  |  |  |  |  |
Total purchase price |  |  |  |  |  |  | 10,900 |  |  |  |  |  |  |
Argon Medical Devices, Inc. | Developed technology |  |  |  |  |  |  |  |  |  |  |  |  |  |
Assets Acquired |  |  |  |  |  |  |  |  |  |  |  |  |  |
Intangibles |  |  |  |  |  |  | 2,200 |  |  |  |  |  |  |
Argon Medical Devices, Inc. | Customer Lists |  |  |  |  |  |  |  |  |  |  |  |  |  |
Assets Acquired |  |  |  |  |  |  |  |  |  |  |  |  |  |
Intangibles |  |  |  |  |  |  | 1,500 |  |  |  |  |  |  |
Argon Medical Devices, Inc. | Trademarks |  |  |  |  |  |  |  |  |  |  |  |  |  |
Assets Acquired |  |  |  |  |  |  |  |  |  |  |  |  |  |
Intangibles |  |  |  |  |  |  | 900 |  |  |  |  |  |  |
Catheter Connections, Inc. |  |  |  |  |  |  |  |  |  |  |  |  |  |
Assets Acquired |  |  |  |  |  |  |  |  |  |  |  |  |  |
Trade receivables |  |  |  |  |  |  | 958 |  |  |  |  |  |  |
Inventories |  |  |  |  |  |  | 2,157 |  |  |  |  |  |  |
Prepaid expenses and other assets |  |  |  |  |  |  | 85 |  |  |  |  |  |  |
Property and equipment |  |  |  |  |  |  | 1,472 |  |  |  |  |  |  |
Goodwill |  |  |  |  |  |  | 8,989 |  |  |  |  |  |  |
Total assets acquired |  |  |  |  |  |  | 38,361 |  |  |  |  |  |  |
Liabilities Assumed |  |  |  |  |  |  |  |  |  |  |  |  |  |
Trade payables |  |  |  |  |  |  | (338) |  |  |  |  |  |  |
Accrued expenses |  |  |  |  |  |  | (23) |  |  |  |  |  |  |
Total liabilities assumed |  |  |  |  |  |  | (361) |  |  |  |  |  |  |
Total net assets acquired |  |  |  |  |  |  | 38,000 |  |  |  |  |  |  |
Total purchase price |  |  |  |  |  |  | 38,000 |  |  |  |  |  |  |
Catheter Connections, Inc. | Developed technology |  |  |  |  |  |  |  |  |  |  |  |  |  |
Assets Acquired |  |  |  |  |  |  |  |  |  |  |  |  |  |
Intangibles |  |  |  |  |  |  | 21,100 |  |  |  |  |  |  |
Catheter Connections, Inc. | Customer Lists |  |  |  |  |  |  |  |  |  |  |  |  |  |
Assets Acquired |  |  |  |  |  |  |  |  |  |  |  |  |  |
Intangibles |  |  |  |  |  |  | 700 |  |  |  |  |  |  |
Catheter Connections, Inc. | Trademarks |  |  |  |  |  |  |  |  |  |  |  |  |  |
Assets Acquired |  |  |  |  |  |  |  |  |  |  |  |  |  |
Intangibles |  |  |  |  |  |  | $ 2,900 |  |  |  |  |  |  |

X
- Definition Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets, Including Goodwill + References No definition available. + Details
Name: | mmsi_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssetsIncludingGoodwill
Namespace Prefix: | mmsi_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Current Assets Other Receivables + References No definition available. + Details
Name: | mmsi_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsOtherReceivables
Namespace Prefix: | mmsi_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Income Tax Refund Receivable + References No definition available. + Details
Name: | mmsi_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIncomeTaxRefundReceivable
Namespace Prefix: | mmsi_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Accrued Expenses + References No definition available. + Details
Name: | mmsi_BusinessCombinationRecognizedIdentifiableAssetsAcquiredandLiabilitiesAssumedAccruedExpenses
Namespace Prefix: | mmsi_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Trade Receivables + References No definition available. + Details
Name: | mmsi_BusinessCombinationRecognizedIdentifiableAssetsAcquiredandLiabilitiesAssumedCurrentAssetsTradeReceivables
Namespace Prefix: | mmsi_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition In a business combination in which the amount of net identifiable assets acquired and liabilities assumed exceeds the aggregate consideration transferred or to be transferred (as defined), this element represents the amount of gain recognized by the entity. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 30 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=116859721&loc=d3e6571-128477 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (f)(1) -URI http://asc.fasb.org/extlink&oid=35744584&loc=d3e6927-128479 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 25 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6911189&loc=d3e6387-128476 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 25 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=6911189&loc=d3e6396-128476 Reference 5: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 30 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=116859721&loc=d3e6527-128477 Reference 6: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 25 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=6911189&loc=d3e6393-128476 + Details
Name: | us-gaap_BusinessCombinationBargainPurchaseGainRecognizedAmount
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount of consideration transferred, consisting of acquisition-date fair value of assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interest issued by the acquirer. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 30 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=116859721&loc=d3e6613-128477 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=35744584&loc=d3e6927-128479 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 30 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=116859721&loc=d3e6578-128477 + Details
Name: | us-gaap_BusinessCombinationConsiderationTransferred1
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssetsAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of currency on hand as well as demand deposits with banks or financial institutions, acquired at the acquisition date. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=116869197&loc=d3e4845-128472 + Details
Name: | us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCashAndEquivalents
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of asset related to consideration paid in advance for costs that provide economic benefits in future periods, and amount of other assets that are expected to be realized or consumed within one year or the normal operating cycle, if longer, acquired at the acquisition date. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=116869197&loc=d3e4845-128472 + Details
Name: | us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsPrepaidExpenseAndOtherAssets
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of liabilities incurred for goods and services received that are used in an entity's business and related party payables, assumed at the acquisition date. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=116869197&loc=d3e4845-128472 + Details
Name: | us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesAccountsPayable
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount of deferred tax asset attributable to deductible temporary differences and carryforwards acquired at the acquisition date. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=116869197&loc=d3e4845-128472 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 45 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=116821951&loc=d3e31917-109318 + Details
Name: | us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedDeferredTaxAssets
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of deferred tax liability attributable to taxable temporary differences assumed at the acquisition date. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 45 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=116821951&loc=d3e31917-109318 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=116869197&loc=d3e4845-128472 + Details
Name: | us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedDeferredTaxLiabilities
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition The amount of identifiable intangible assets recognized as of the acquisition date. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 55 -Paragraph 37 -URI http://asc.fasb.org/extlink&oid=116868840&loc=d3e2207-128464 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=116869197&loc=d3e4845-128472 + Details
Name: | us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibles
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition The amount of inventory recognized as of the acquisition date. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=116869197&loc=d3e4845-128472 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 55 -Paragraph 37 -URI http://asc.fasb.org/extlink&oid=116868840&loc=d3e2207-128464 + Details
Name: | us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedInventory
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of liabilities assumed at the acquisition date. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=116869197&loc=d3e4845-128472 + Details
Name: | us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilities
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- References No definition available. + Details
Name: | us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilitiesAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of other liabilities due after one year or the normal operating cycle, if longer, assumed at the acquisition date. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=116869197&loc=d3e4845-128472 + Details
Name: | us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNoncurrentLiabilitiesOther
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount of other assets expected to be realized or consumed after one year or the normal operating cycle, if longer, acquired at the acquisition date. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=116869197&loc=d3e4845-128472 + Details
Name: | us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedOtherNoncurrentAssets
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition The amount of property, plant, and equipment recognized as of the acquisition date. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 55 -Paragraph 37 -URI http://asc.fasb.org/extlink&oid=116868840&loc=d3e2207-128464 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=116869197&loc=d3e4845-128472 + Details
Name: | us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedPropertyPlantAndEquipment
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount recognized for assets, including goodwill, in excess of (less than) the aggregate liabilities assumed. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=116869197&loc=d3e4845-128472 + Details
Name: | us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredGoodwillAndLiabilitiesAssumedNet
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 45 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=77989000&loc=SL49117168-202975 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=99380562&loc=d3e13770-109266 + Details
Name: | us-gaap_Goodwill
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Details
Name: | us-gaap_BusinessAcquisitionAxis=mmsi_FibroveinHoldingsLimitedMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis=us-gaap_DevelopedTechnologyRightsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_BusinessAcquisitionAxis=mmsi_BrightwaterMedicalInc.Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis=us-gaap_CustomerListsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis=us-gaap_TrademarksMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_BusinessAcquisitionAxis=mmsi_VascularInsightsLLCandVIManagementInc.Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_BusinessAcquisitionAxis=mmsi_CiannaMedicalMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_BusinessAcquisitionAxis=mmsi_DirectACCESSMedicalLLCMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_BusinessAcquisitionAxis=mmsi_BectonDickinsonandCompanyMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis=us-gaap_InProcessResearchAndDevelopmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_BusinessAcquisitionAxis=mmsi_ITLHealthcarePtyLtdMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_BusinessAcquisitionAxis=mmsi_LauraneMedicalS.A.S.Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_BusinessAcquisitionAxis=mmsi_OsseonLLCMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_BusinessAcquisitionAxis=mmsi_VascularAccessTechnologiesInc.Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_BusinessAcquisitionAxis=mmsi_ArgonMedicalDevicesInc.Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RestatementAxis=srt_ScenarioPreviouslyReportedMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_BusinessAcquisitionAxis=mmsi_CatheterConnectionsInc.Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |