Statements Of Cash Flows (Tables)

9 Months Ended

Sep. 30, 2012

Statements Of Cash Flows [Abstract]

Supplemental Disclosures Of Cash Flow Information

	Nine months ended
	September 30, 2012		September 30, 2011
Interest paid	$	570	$	420
Non-cash receivables on the sale of Global Coils	$	721	$	—