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Discontinued Operations Accrued Balance (Detail) (USD $) | Mar. 31, 2015 | Dec. 31, 2014
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Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |
Total current liabilities of discontinued operations | $ 2,231,000 us-gaap_DisposalGroupIncludingDiscontinuedOperationAccruedLiabilitiesCurrent |
Total long-term liabilities of discontinued operations | 1,712,000 us-gaap_LiabilitiesOfDisposalGroupIncludingDiscontinuedOperationNoncurrent | 2,756,000 us-gaap_LiabilitiesOfDisposalGroupIncludingDiscontinuedOperationNoncurrent
Ending accrued balance as of December 31, 2014 | $ 3,943,000 us-gaap_DisposalGroupIncludingDiscontinuedOperationAccruedLiabilities |

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- Definition Amount classified as liabilities attributable to disposal group held for sale or disposed of, expected to be disposed of beyond one year or the normal operating cycle, if longer. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 20 -Section 45 -Paragraph 10 -URI http://asc.fasb.org/extlink&oid=6892542&loc=d3e1107-107759 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6360339&loc=d3e1361-107760 + Details
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