Supplemental Cash Flow Information (Tables)

12 Months Ended

Dec. 31, 2012

Supplemental Cash Flow Elements [Abstract]

Supplemental Cash Flow Information

	Year ended December 31,
	2012		2011
Cash paid for interest	$	1,841	$	1,253
Noncash investing and financing activities:
Assets acquired under capital lease or seller notes payable	$	-	$	29
Accrued capital expenditures	$	1,090	$	705
Issuance of common stock in connection with Canada Exchange acquisition	$	-	$	3,220
Issuance of common stock in connection with the Omnifrio acquisition	$	-	$	7,060