Statement of Operations and Comprehensive Income (Parentheticals) (USD $)	12 Months Ended
Dec. 31, 2014	Dec. 31, 2013
Income Statement [Abstract]
Other Comprehensive Income (Loss), Derivatives Qualifying as Hedges, Tax Effect	$ 0	$ 566,000
Other Comprehensive Income (Loss), Reclassification Adjustment on Derivatives Included in Net Income, Tax Effect	$ (225,000)	$ (247,000)

Amount of tax expense (benefit) of reclassification adjustment from accumulated other comprehensive income of accumulated gain (loss) realized from derivative instruments designated and qualifying as the effective portion of cash flow hedges and an entity's share of an equity investee's deferred hedging gain (loss).

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 220

-SubTopic 10

-Section 45

-Paragraph 12

-URI http://asc.fasb.org/extlink&oid=36458714&loc=d3e640-108580

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 815

-SubTopic 10

-Section 50

-Paragraph 4

-Subparagraph c

-URI http://asc.fasb.org/extlink&oid=35706170&loc=d3e41638-113959

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