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Major customers. The revenues derived from external customers who individually amounted to 10 per cent or more of the Company's revenues are as follows: $31.6 million (December 31, 2011 - $nil), $13.7 million (December 31, 2011 - $33.9 million), $10.9 million (December 31, 2011 - $28.6 million), and $4.9 million (December 31, 2011 - $30.8 million).
15. EXPENSES BY NATURE
December December 31, 2012 31, 2011Third-party gathering, processing and treating services $ 9,328 $ 8,790External services(1) 8,248 9,970Employee benefit expenses (note 16) 7,504 7,229Operating leases and equipment rents(2) 4,272 3,893Repairs and maintenance 2,940 3,494Materials and supplies 2,254 2,313Other expenses (383) 4,249 -------------------------Expenses by nature $ 34,163 $ 39,938----------------------------------------------------------------------------Above costs allocated to the following functions: Operating $ 24,239 $ 29,533 General and administrative 9,924 10,405 -------------------------Total operating and general and administrative expenses $ 34,163 $ 39,938----------------------------------------------------------------------------(1) External services include professional fees, contract operators, consulting fees, design fees and other operating and administrative services.(2) Operating leases and equipment rents include office leases, surface leases, and equipment rents.
16. EMPLOYEE BENEFIT EXPENSES
General and administrative expenses include employee benefit expense as follows:
December December 31, 2012 31, 2011Short-term employee benefits $ 9,368 $ 9,726Share-based payments 1,033 1,491 --------------------------Total employee remuneration 10,401 11,217Capitalized portion of employee remuneration (2,897) (3,988) -------------------------- $ 7,504 $ 7,229----------------------------------------------------------------------------
Employees include all staff and directors of the Company. Personnel expenses directly attributed to capital activities have been capitalized and included in property, plant and equipment.
17. FINANCE INCOME AND EXPENSES
December December 31, 2012 31, 2011Income: Interest income on cash equivalents $ 1 $ 6 Other interest income 48 78Expenses: Interest and financing costs on bank loans (4,610) (3,201) Interest on convertible debentures (7,085) (5,631) Accretion on convertible debentures (1,957) (1,434) Accretion on decommissioning obligations (1,068) (1,630) Other (52) (46) --------------------------Net finance expenses $ (14,723) $ (11,858)----------------------------------------------------------------------------
