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Acquisition (Tables) | 12 Months Ended
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Dec. 31, 2017
Business Acquisition [Line Items] |
Business Acquisition, Pro Forma Information [Table Text Block] | Additionally, the unaudited pro forma financial results do not include any anticipated synergies or other expected benefits from the acquisitions (unaudited, in thousands, except per share amounts):
| Years Ended
| December 31,
| 2016 |  | 2015
Revenue | $ | 364,443 |  |  | $ | 374,036 |
Net income | $ | 5,727 |  |  | $ | 188,852 |
Net income per share - diluted | $ | 0.05 |  |  | $ | 1.61 |
Snowbush [Member] |
Business Acquisition [Line Items] |
Schedule of Recognized Identified Assets Acquired and Liabilities Assumed | The total consideration from the business combination was allocated as follows:
| Total
| (in thousands)
Property and equipment | $ | 911 |
Identified intangible assets | 25,189 |
Goodwill | 14,015 |
Deferred revenue | (1,270 | )
Total | $ | 38,845 |
Finite-Lived and Indefinite-Lived Intangible Assets Acquired as Part of Business Combination | The identified intangible assets assumed in the acquisition of the Snowbush IP assets were recognized as follows based upon their estimated fair values as of the acquisition date:
| Total |  | Estimated Weighted Average Useful Life
| (in thousands) |  | (in years)
Existing technology | $ | 2,600 |  |  | 5
Customer contracts and contractual relationships | 789 |  |  | 2
In-process research and development | 21,800 |  |  | Not applicable
Total | $ | 25,189 |  |  |
Smart Card Software Limited |
Business Acquisition [Line Items] |
Schedule of Recognized Identified Assets Acquired and Liabilities Assumed | The total consideration from the business combination was allocated as follows:
| Total
| (in thousands)
Cash | $ | 12,056 |
Accounts receivable | 6,563 |
Property and equipment | 524 |
Other tangible assets | 1,462 |
Identified intangible assets | 59,700 |
Goodwill | 46,903 |
Accounts payable and accrued liabilities | (5,996 | )
Deferred income taxes | (15,556 | )
Deferred revenue | (1,313 | )
Total | $ | 104,343 |
Finite-Lived and Indefinite-Lived Intangible Assets Acquired as Part of Business Combination | The identified intangible assets assumed in the acquisition of SCS were recognized as follows based upon their estimated fair values as of the acquisition date:
| Total |  | Estimated Weighted Average Useful Life
| (in thousands) |  | (in years)
Existing technology | $ | 24,600 |  |  | 6
Customer contracts and contractual relationships (1) | 35,100 |  |  | 6
Total | $ | 59,700 |  |  |
(1) Includes favorable contracts of $8.3 million with an estimated useful life of 5 years. The favorable contracts are acquired software and service agreements where the Company has no performance obligations. Cash received from these acquired favorable contracts reduces the favorable contract intangible asset.
Inphi Memory Interconnect Business [Member] |
Business Acquisition [Line Items] |
Schedule of Recognized Identified Assets Acquired and Liabilities Assumed | The total consideration from the business combination was allocated as follows:
| Total
| (in thousands)
Inventory | $ | 6,300 |
Property and equipment | 4,543 |
Other tangible assets | 206 |
Identified intangible assets | 50,222 |
Goodwill | 32,723 |
Accounts payable and accrued liabilities | (3,527 | )
Deferred revenue | (467 | )
Total | $ | 90,000 |
Finite-Lived and Indefinite-Lived Intangible Assets Acquired as Part of Business Combination | The identified intangible assets assumed in the acquisition of the acquired business were recognized as follows based upon their estimated fair values as of the acquisition date:
| Total |  | Estimated Weighted Average Useful Life
| (in thousands) |  | (in years)
Existing technology | $ | 44,900 |  |  | 5
Customer contracts and contractual relationships | 3,722 |  |  | 6
In-process research and development | 1,600 |  |  | Not applicable
Total | $ | 50,222 |  |  |

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- Definition Tabular disclosure of pro forma results of operations for a material business acquisition or series of individually immaterial business acquisitions that are material in the aggregate. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(2)-(3) -URI http://asc.fasb.org/extlink&oid=79982066&loc=d3e1392-128463 + Details
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- Definition Tabular disclosure of the amounts recognized as of the acquisition date for each major class of assets acquired and liabilities assumed. May include but not limited to the following: (a) acquired receivables; (b) contingencies recognized at the acquisition date; and (c) the fair value of noncontrolling interests in the acquiree. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=84161108&loc=d3e4845-128472 + Details
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