v3.6.0.2

Fair Value Measurements (Fair Value Measurements) (Details) - USD ($) | 1 Months Ended |  |  |  |
--- | --- | --- | --- | --- | ---
Sep. 30, 2016 | Dec. 03, 2016 | Mar. 07, 2016 | Nov. 28, 2015 | Dec. 17, 2014
FiberRio Technology Corporation [Member] |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |
FibeRio contingent earn-out, included in Accrued liabilities |  |  | $ 3,887,000 |  |
Filter Resources, Inc. [Member] |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |
FibeRio contingent earn-out, included in Accrued liabilities |  | $ 0 |  |  | $ 1,154,000
Contingent consideration increase (decrease) | $ 6,000 |  |  |  |
Accrued Liabilities [Member] |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |
FibeRio contingent earn-out, included in Accrued liabilities |  | 3,732,000 |  | $ 1,285,000 |
Foreign exchange contracts |  | 284,000 |  | 40,000 |
Prepaid Expenses and Other Current Assets [Member] |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |
Foreign exchange contracts |  | 461,000 |  | 418,000 |
Other Noncurrent Liabilities [Member] | FiberRio Technology Corporation [Member] |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |
FibeRio contingent earn-out, included in Accrued liabilities |  | 3,732,000 | $ 3,887,000 |  |
Mutual fund investments - equities [Member] |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |
Restricted trust, included in Other noncurrent assets |  | 286,000 |  | 352,000 |
Mutual fund investments - bonds [Member] |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |
Restricted trust, included in Other noncurrent assets |  | 288,000 |  | 363,000 |
Cash and equivalents [Member] |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |
Restricted trust, included in Other noncurrent assets |  | 18,000 |  | 14,000 |
Level 1 [Member] |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |
Restricted trust, included in Other noncurrent assets |  | 592,000 |  | 729,000 |
Level 1 [Member] | Accrued Liabilities [Member] |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |
FibeRio contingent earn-out, included in Accrued liabilities |  | 0 |  | 0 |
Foreign exchange contracts |  | 0 |  | 0 |
Level 1 [Member] | Prepaid Expenses and Other Current Assets [Member] |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |
Foreign exchange contracts |  | 0 |  | 0 |
Level 1 [Member] | Mutual fund investments - equities [Member] |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |
Restricted trust, included in Other noncurrent assets |  | 286,000 |  | 352,000 |
Level 1 [Member] | Mutual fund investments - bonds [Member] |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |
Restricted trust, included in Other noncurrent assets |  | 288,000 |  | 363,000 |
Level 1 [Member] | Cash and equivalents [Member] |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |
Restricted trust, included in Other noncurrent assets |  | 18,000 |  | 14,000 |
Level 2 [Member] |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |
Restricted trust, included in Other noncurrent assets |  | 0 |  | 0 |
Level 2 [Member] | Accrued Liabilities [Member] |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |
FibeRio contingent earn-out, included in Accrued liabilities |  | 0 |  | 0 |
Foreign exchange contracts |  | 284,000 |  | 40,000 |
Level 2 [Member] | Prepaid Expenses and Other Current Assets [Member] |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |
Foreign exchange contracts |  | 461,000 |  | 418,000 |
Level 2 [Member] | Mutual fund investments - equities [Member] |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |
Restricted trust, included in Other noncurrent assets |  | 0 |  | 0 |
Level 2 [Member] | Mutual fund investments - bonds [Member] |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |
Restricted trust, included in Other noncurrent assets |  | 0 |  | 0 |
Level 2 [Member] | Cash and equivalents [Member] |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |
Restricted trust, included in Other noncurrent assets |  | 0 |  | 0 |
Level 3 [Member] |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |
Restricted trust, included in Other noncurrent assets |  | 0 |  | 0 |
Level 3 [Member] | Accrued Liabilities [Member] |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |
FibeRio contingent earn-out, included in Accrued liabilities |  | 3,732,000 |  | 1,285,000 |
Foreign exchange contracts |  | 0 |  | 0 |
Level 3 [Member] | Prepaid Expenses and Other Current Assets [Member] |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |
Foreign exchange contracts |  | 0 |  | 0 |
Level 3 [Member] | Mutual fund investments - equities [Member] |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |
Restricted trust, included in Other noncurrent assets |  | 0 |  | 0 |
Level 3 [Member] | Mutual fund investments - bonds [Member] |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |
Restricted trust, included in Other noncurrent assets |  | 0 |  | 0 |
Level 3 [Member] | Cash and equivalents [Member] |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |
Restricted trust, included in Other noncurrent assets |  | $ 0 |  | $ 0 |

X
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