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Quarterly Financial Data (Unaudited) (Details) - USD ($) | 3 Months Ended | 12 Months Ended
--- | --- | ---
Sep. 30, 2015 | Jun. 30, 2015 | Mar. 31, 2015 | Dec. 31, 2014 | Sep. 30, 2014 | Jun. 30, 2014 | Mar. 31, 2014 | Dec. 31, 2013 | Sep. 30, 2015 | Sep. 30, 2014
Quarterly Financial Information Disclosure [Abstract] |  |  |  |  |  |  |  |  |  |
Revenue | $ 16,990,000 | $ 16,781,000 | $ 15,893,000 | $ 15,682,000 | $ 15,579,000 | $ 15,692,000 | $ 14,745,000 | $ 14,477,000 | $ 65,346,000 | $ 60,493,000
Gross Profit | 3,387,000 | 3,038,000 | 2,730,000 | 2,533,000 | 2,340,000 | 2,308,000 | 2,199,000 | 2,112,000 | 11,688,000 | 8,959,000
Operating income | 958,000 | 763,000 | 515,000 | 259,000 | 205,000 | 268,000 | 225,000 | 66,000 | 2,496,000 | 764,000
Other income (expense), net (2) | 1,466,000 | (34,000) | (651,000) | (36,000) | (27,000) | (17,000) | (27,000) | 67,000 | 744,000 | (4,000)
Income before income taxes | 2,424,000 | 729,000 | (136,000) | 223,000 | 178,000 | 251,000 | 198,000 | 133,000 | 3,240,000 | 760,000
Income Tax Expense (Benefit) | 5,814,000 | (292,000) | 54,000 | (89,000) | 4,597,000 | (0.00) | (0.00) | (0.00) | 5,488,000 | 4,597,000
Net income | $ 8,238,000 | $ 437,000 | $ (82,000) | $ 134,000 | $ 4,775,000 | $ 251,000 | $ 198,000 | $ 133,000 | $ 8,728,000 | $ 5,357,000
Net income (loss) per share - basic (dollars per share) | $ 0.86 | $ 0.05 | $ (0.01) | $ 0.01 | $ 0.50 | $ 0.03 | $ 0.02 | $ 0.01 | $ 0.91 | $ 0.56
Net income (loss) per share - diluted (dollars per share) | $ 0.82 | $ 0.04 | $ (0.01) | $ 0.01 | $ 0.48 | $ 0.03 | $ 0.02 | $ 0.01 | $ 0.87 | $ 0.54

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