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CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) | 12 Months Ended
--- | ---
Dec. 31, 2015 | Dec. 31, 2014 | Dec. 31, 2013
Revenue: |  |  |
Medical services | $ 16,548,000 | $ 15,417,000 | $ 17,584,000
Revenue | 16,548,000 | 15,417,000 | 17,584,000
Costs of revenue: |  |  |
Maintenance and supplies | 1,089,000 | 1,691,000 | 1,791,000
Depreciation and amortization | 6,139,000 | 6,171,000 | 6,309,000
Other direct operating costs | 2,605,000 | 2,276,000 | 2,540,000
Costs of revenue | 9,833,000 | 10,138,000 | 10,640,000
Gross Margin | 6,715,000 | 5,279,000 | 6,944,000
Selling and administrative expense | 3,496,000 | 3,630,000 | 4,025,000
Interest expense | 1,239,000 | 1,699,000 | 1,799,000
Operating income (loss) | 1,980,000 | (50,000) | 1,120,000
(Loss) on write down investment in equity securities | (2,140,000) | 0 | 0
(Loss) on sale of subsidiary | 0 | (572,000) | 0
Gain (loss) foreign currency transactions | 0 | 161,000 | (1,174,000)
Interest and other income | 18,000 | 28,000 | 25,000
(Loss) before income taxes | (142,000) | (433,000) | (29,000)
Income tax expense | 434,000 | 129,000 | 84,000
Net (loss) | (576,000) | (562,000) | (113,000)
Less: net income attributable to non-controlling interests | (946,000) | (390,000) | (199,000)
Net (loss) attributable to American Shared Hospital Services | $ (1,522,000) | $ (952,000) | $ (312,000)
Net (loss) per share attributable to American Shared Hospital Services: |  |  |
(Loss) per common share- basic | $ (0.28) | $ (0.19) | $ (0.07)
(Loss) per common share- diluted | $ (0.28) | $ (0.19) | $ (0.07)

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