Equity Method Investments - Additional Information (Detail) - USD ($) |
3 Months Ended | 12 Months Ended | |||||||||
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Dec. 31, 2016 |
Sep. 30, 2016 |
Jun. 30, 2016 |
Mar. 31, 2016 |
Dec. 31, 2015 |
Sep. 30, 2015 |
Jun. 30, 2015 |
Mar. 31, 2015 |
Dec. 31, 2016 |
Dec. 31, 2015 |
Dec. 31, 2014 |
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| Schedule of Equity Method Investments [Line Items] | |||||||||||
| Income (loss) from equity method investments | $ 3,433,000 | $ 1,331,000 | $ 1,076,000 | $ 270,000 | $ 63,000 | $ 187,000 | $ (295,000) | $ (53,000) | $ 6,110,000 | $ (98,000) | |
| Strong Upwind Holdings LLC [Member] | |||||||||||
| Schedule of Equity Method Investments [Line Items] | |||||||||||
| Income (loss) from equity method investments | $ 6,100,000 | $ (100,000) | $ 0 | ||||||||
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- Definition This item represents the entity's proportionate share for the period of the net income (loss) of its investee (such as unconsolidated subsidiaries and joint ventures) to which the equity method of accounting is applied. This item includes income or expense related to stock-based compensation based on the investor's grant of stock to employees of an equity method investee. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. No definition available.
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- Details
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