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Fair Value Measurements - Narrative (Details) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended |
--- | --- | --- | ---
Dec. 31, 2016 | Dec. 31, 2016 | Dec. 31, 2015 | Dec. 31, 2014 | Mar. 31, 2015
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |
Time deposits, $250,000 or more | $ 250 | $ 250 |  |  |
Note receivable |  |  |  |  | $ 1,000
Interest rate |  |  |  |  | 8.00%
Asset impairment charges |  | 520 | $ 2,087 | $ 355 |
Property and equipment | 735 | 735 | 2,040 |  |
Proceeds from sale of property and equipment |  | 52 | 942 | $ 26 |
Cost of Sales | Nonrecurring Basis |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |
Impairment charges |  | 800 |  |  |
Other Nonoperating Income (Expense) [Member] | Highview Enterprises Limited | Cost method investment |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |
Asset impairment charges | $ 1,800 |  |  |  |
Disposed of by Sale |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |
Impairment charges |  | $ 500 |  |  |
Proceeds from sale of impaired assets |  |  | 600 |  |
Property and equipment |  |  | 100 |  |
Proceeds from sale of property and equipment |  |  | 300 |  |
Gain on disposition of assets |  |  | 200 |  |
Disposed of by Sale | General and Administrative Expense |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |
Impairment charges |  |  | $ 300 |  |

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- Definition Amount due from customers or clients, more than one year from the balance sheet date, for goods or services that have been delivered or sold in the normal course of business, reduced to the estimated net realizable fair value by an allowance established by the entity of the amount it deems uncertain of collection. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(5)) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(17)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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