Accounts payable and accrued liabilities: (Tables)

12 Months Ended

Dec. 31, 2012

Accounts payable and accrued liabilities:

Schedule of accounts payable and accrued liabilities

	December 31, 2012		December 31, 2011
Trade accounts payable	$	37,956	$	37,651
Accrued payroll	8,539		8,157
Accrued interest	961		1,233
Income taxes payable	876		1,311
Due to joint venture and other payables	177		899
	$	48,509	$	49,251