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Consolidated Balance Sheets (Unaudited) (Parentheticals) - USD ($) $ in Thousands | Jun. 30, 2016 | Dec. 31, 2015
--- | --- | ---
Receivables, Net |  |
Reserve for uncollectible accounts receivable | $ 3,047 | $ 3,052
Reserve for uncollectible other accounts receivable | 506 | 642
MGE [Member] |  |
Receivables, Net |  |
Reserve for uncollectible accounts receivable | 3,047 | 3,052
Reserve for uncollectible other accounts receivable | $ 506 | $ 642

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- Definition A valuation allowance for trade and other receivables due to an Entity within one year (or the normal operating cycle, whichever is longer) that are expected to be uncollectible. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.4) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=49124121&loc=d3e5074-111524 + Details
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