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Components and Allocation of Purchase Price (Detail) - USD ($) $ in Thousands | Jun. 30, 2017 | Dec. 31, 2016 | Dec. 14, 2016 | Apr. 01, 2016
--- | --- | --- | --- | ---
Business Acquisition [Line Items] |  |  |  |
Goodwill | $ 60,979 | $ 59,548 |  |
Atoll GmbH |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Cash and cash equivalents |  |  |  | $ 1,409
Accounts receivable |  |  |  | 697
Inventory |  |  |  | 155
Other current assets |  |  |  | 169
Fixed assets, net |  |  |  | 114
Deferred tax assets |  |  |  | 885
Accounts payable and other liabilities assumed |  |  |  | (599)
Deferred tax liabilities |  |  |  | (2,202)
Goodwill |  |  |  | 17,077
Net assets acquired |  |  |  | 25,266
Atoll GmbH | Customer relationships |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Business combination, intangible assets |  |  |  | 5,318
Atoll GmbH | Technology - developed |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Business combination, intangible assets |  |  |  | 2,175
Atoll GmbH | Non-competition agreements |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Business combination, intangible assets |  |  |  | 57
Atoll GmbH | Trademark |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Business combination, intangible assets |  |  |  | $ 11
TangenX Technology Corporation |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Cash and cash equivalents |  |  | $ 1,218 |
Accounts receivable |  |  | 459 |
Other receivables |  |  | 111 |
Inventory |  |  | 936 |
Other current assets |  |  | 50 |
Fixed assets, net |  |  | 215 |
Accounts payable and other liabilities assumed |  |  | (3,083) |
Deferred tax liabilities |  |  | (4,525) |
Goodwill |  |  | 29,501 |
Net assets acquired |  |  | 37,150 |
TangenX Technology Corporation | Customer relationships |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Business combination, intangible assets |  |  | 6,192 |
TangenX Technology Corporation | Technology - developed |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Business combination, intangible assets |  |  | 6,044 |
TangenX Technology Corporation | Non-competition agreements |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Business combination, intangible assets |  |  | 21 |
TangenX Technology Corporation | Trademark |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Business combination, intangible assets |  |  | $ 11 |

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