Consolidated Statements Of Cash Flows (USD $) In Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2011	Jun. 30, 2010	Jun. 30, 2011	Jun. 30, 2010
Operations:
Net income (loss)	$ (2,297)	$ 1,728	$ (2,521)	$ 799
Items not involving cash from operations:
Depreciation and amortization expense	4,040	4,629	8,397	9,395
Deferred income taxes	64	115	59	(382)
Share-based compensation expense	119	143	261	296
Gain on sale of property and equipment	(67)	(1)	(105)	(145)
Income on discontinued operations		(161)		(509)
Change in non-cash working capital components	2,270	(2,413)	(3,704)	(6,071)
Continuing operations	4,129	4,040	2,387	3,383
Discontinued operations	(1,342)	267	(526)	873
Net cash provided by (used in) operating activities	2,787	4,307	1,861	4,256
Investments:
Purchase of property and equipment	(4,268)	(1,116)	(6,608)	(3,981)
Proceeds on sale of property and equipment	265	116	329	826
Acquisition of business assets			(1,737)
Net cash provided by (used in) investing activities	(4,003)	(1,000)	(8,016)	(3,155)
Financing:
Change in revolving credit facility and bank overdraft	5,438	837	14,615	8,659
Repayment of long-term debt	(3,000)	(3,447)	(6,000)	(7,355)
Repayment of capital leases	(939)	(1,124)	(1,910)	(2,397)
Issue of common shares upon exercise of employee stock options			80
Net cash provided by (used in) financing activities	1,499	(3,734)	6,785	(1,093)
Effect of translation adjustment on cash	(283)	427	(630)	(8)
Increase in cash and cash equivalents
Cash and cash equivalents, beginning of period
Cash and cash equivalents, end of period
Change in non-cash working capital components:
Accounts receivable	(5,057)	1,493	(21,872)	(10,503)
Inventory, deposits and prepaid expenses	1,791	1,629	(100)	1,246
Income and other taxes payable	659	(1,105)	365	(2,309)
Accounts payable and accrued liabilities	4,877	(4,430)	17,903	5,495
Change in non-cash working capital components	$ 2,270	$ (2,413)	$ (3,704)	$ (6,071)