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Business Acquisitions - Additional Information (Details) - USD ($) $ in Thousands |  |  |  | 3 Months Ended | 6 Months Ended | 12 Months Ended
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Jan. 05, 2016 | Apr. 30, 2015 | Apr. 30, 2015 | Apr. 21, 2015 | Jun. 30, 2016 | Mar. 31, 2016 | Dec. 31, 2015 | Jun. 30, 2015 | Jun. 30, 2016 | Jun. 30, 2016 | Jun. 30, 2015 | Dec. 31, 2015
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Total purchase price, net of cash received |  |  | $ 37,638 |  |  |  |  |  |  | $ 271,458 | $ 23,625 |
Cash on hand at signing |  | $ 3,789 | 3,789 |  |  |  |  |  |  |  |  |
Business combination, earn-out payment |  |  |  |  |  |  |  |  |  | 3,000 | 0 |
Revenues |  |  |  |  | $ 172,907 |  |  | $ 112,788 |  | 343,911 | 229,009 |
(Loss) income from operations |  |  |  |  | (118) |  |  | 12,424 |  | 1,734 | 22,803 |
Amortization expense of intangible assets |  |  |  |  | 9,100 |  |  | $ 1,800 |  | 18,300 | $ 3,100 |
Aesynt Holding, L.P., Aesynt, Ltd. |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Total purchase price, net of cash received | $ 271,500 |  |  |  |  |  |  |  |  |  |  |
Cash on hand at signing | 8,200 |  |  |  |  |  |  |  |  |  |  |
Adjustment to preliminary value, goodwill |  |  |  |  | 800 |  |  |  |  |  |  |
Adjustment to preliminary value, accounts receivable |  |  |  |  | 500 |  |  |  |  |  |  |
Adjustment to preliminary value, current liabilities |  |  |  |  | 300 |  |  |  |  |  |  |
Acquisition-related costs | $ 8,000 |  |  |  |  |  |  |  |  |  |  |
Revenue of acquiree since acquisition date |  |  |  |  |  |  |  |  | $ 82,000 |  |  |
Revenues |  |  |  |  |  |  |  |  |  | 9,800 |  |
(Loss) income from operations |  |  |  |  |  |  |  |  | (20,200) | 3,000 |  |
Amortization expense of intangible assets |  |  |  |  |  |  |  |  |  | 800 |  |
Aesynt Holding, L.P., Aesynt, Ltd. | In-process research and development (IPR&D) (1) |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Royalty rate | 12.50% |  |  |  |  |  |  |  |  |  |  |
Aesynt Holding, L.P., Aesynt, Ltd. | Customer relationships |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Discount rate | 13.00% |  |  |  |  |  |  |  |  |  |  |
Aesynt Holding, L.P., Aesynt, Ltd. | Backlog |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Discount rate | 10.00% |  |  |  |  |  |  |  |  |  |  |
Aesynt Holding, L.P., Aesynt, Ltd. | Non-compete |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Discount rate | 13.00% |  |  |  |  |  |  |  |  |  |  |
Aesynt Holding, L.P., Aesynt, Ltd. | Trade names |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Royalty rate | 0.50% |  |  |  |  |  |  |  |  |  |  |
Aesynt Holding, L.P., Aesynt, Ltd. | Minimum |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
In process research and development, expected term | 2 years |  |  |  |  |  |  |  |  |  |  |
Aesynt Holding, L.P., Aesynt, Ltd. | Minimum | Developed technology |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Royalty rate | 0.40% |  |  |  |  |  |  |  |  |  |  |
Aesynt Holding, L.P., Aesynt, Ltd. | Maximum |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
In process research and development, expected term | 3 years |  |  |  |  |  |  |  |  |  |  |
Aesynt Holding, L.P., Aesynt, Ltd. | Maximum | Developed technology |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Royalty rate | 0.80% |  |  |  |  |  |  |  |  |  |  |
Mach4 |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Total purchase price, net of cash received |  |  |  | $ 16,889 |  |  |  |  |  |  |  |
Cash on hand at signing |  |  |  | 397 |  |  |  |  |  |  |  |
Payment to acquire business, amount in cash after adjustments |  |  |  | 17,300 |  |  |  |  |  |  |  |
Amount placed in escrow fund for business acquisition |  |  |  | $ 2,700 |  |  |  |  |  |  |  |
Avantec |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Total purchase price, net of cash received |  | 20,749 |  |  |  |  |  |  |  |  |  |
Cash on hand at signing |  | $ 3,392 | $ 3,392 |  |  |  |  |  |  |  |  |
Percentage of interest acquired |  | 85.00% | 85.00% |  |  |  |  | 85.00% |  |  | 85.00% |
Payments to acquire business, gross |  | $ 12,000 |  |  |  |  |  |  |  |  |  |
Business acquisition, potential earn-out payment |  | 5,600 | $ 5,600 |  |  |  |  |  |  |  |  |
Business acquisition, amount withheld for indemnification |  | $ 1,800 | 1,800 |  |  |  |  |  |  |  |  |
Period after closing date to settle indemnification and other claims |  | 18 months |  |  |  |  |  |  |  |  |  |
Business combination, earn-out payment |  |  |  |  |  | $ 3,000 |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  |  | 5,100 |  |
(Loss) income from operations |  |  |  |  |  |  |  |  |  | 900 |  |
Amortization expense of intangible assets |  |  |  |  |  |  |  |  | $ 14,000 | 500 |  |
Avantec | Payable After December 31, 2015 |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Business acquisition, potential earn-out payment |  | $ 3,000 | 3,000 |  |  |  |  |  |  |  |  |
Avantec | Payable After December 31, 2016 |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Business acquisition, potential earn-out payment |  | $ 3,000 | $ 3,000 |  |  |  |  |  |  |  |  |
Selling, General and Administrative Expenses | Aesynt Holding, L.P., Aesynt, Ltd. |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Acquisition-related costs |  |  |  |  | $ 5,100 |  | $ 2,900 |  |  | $ 5,100 |  | $ 2,900

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- Definition The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6388964&loc=d3e16225-109274 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3602-108585 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(2) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275 + Details
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- Definition Percentage of voting equity interests acquired at the acquisition date in the business combination. + 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 (c) -URI http://asc.fasb.org/extlink&oid=65885119&loc=d3e1392-128463 + Details
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- Definition This element represents acquisition-related costs incurred to effect a business combination which costs have been expensed during the period. Such costs include finder's fees; advisory, legal, accounting, valuation, and other professional or consulting fees; general administrative costs, including the costs of maintaining an internal acquisitions department; and may include costs of registering and issuing debt and equity securities. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 25 -Paragraph 23 -URI http://asc.fasb.org/extlink&oid=73531572&loc=d3e1043-128460 + Details
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- Definition This element represents the amount of revenue of the acquiree since the acquisition date included in the consolidated income statement for the reporting period. + 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)(1) -URI http://asc.fasb.org/extlink&oid=65885119&loc=d3e1392-128463 + Details
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- 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://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=73530397&loc=d3e4845-128472 + Details
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- Definition Interest rate used to find the present value of an amount to be paid or received in the future as an input to measure fair value. For example, but not limited to, weighted average cost of capital (WACC), cost of capital, cost of equity and cost of debt. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (bbb) -URI http://asc.fasb.org/extlink&oid=66048111&loc=d3e19207-110258 + Details
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- Definition Amount of increase (decrease) from adjustments after acquisition date under purchase accounting of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 25 -Paragraph 16 -URI http://asc.fasb.org/extlink&oid=73531572&loc=d3e961-128460 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (g) -URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267 + Details
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