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Discontinued Operations - Reconciliation of Carrying Amounts of Major Classes of Assets and Liabilities of Fiber Optic Licensing Operations (Detail) - USD ($) $ in Thousands | Jun. 30, 2015 | Dec. 31, 2014
--- | --- | ---
Current assets: |  |
Accounts receivable | $ 6,771 | $ 11,429
Prepaid expenses and other current assets | 2,301 | 11,287
Total current assets of fiber optic licensing operations | 9,072 | 22,716
Non-current assets: |  |
Property and equipment | 392,229 | 380,554
Other intangible assets, net of accumulated amortization | 16,184 | 17,009
Goodwill | 334,790 | 334,790
Total major classes of non-current assets of fiber optic licensing operations | 743,203 | 732,353
Other non-current assets included in fiber optic licensing operations | 9,396 | 6,709
Total non-current assets of fiber optic licensing operations | 752,599 | 739,062
Current Liabilities: |  |
Accounts payable and accrued expenses | 17,975 | 21,091
Deferred income taxes | 49,668 |
Total current liabilities of fiber optic licensing operations | 67,643 | 21,091
Non-current Liabilities: |  |
Deferred income taxes |  | 66,137
Long-term deferred revenue | 47,855 | 48,231
Total major classes of non-current liabilities of fiber optic licensing operations | 47,855 | 114,368
Other non-current liabilities of fiber optic licensing operations | 206 | 193
Total non-current liabilities of fiber optic licensing operations | $ 48,061 | $ 114,561

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